List of commercial video games with later released source code
This is a list of commercial video games with later released available source code. The source code of these commercially developed and distributed video games is available to the public or the games' communities.
Motivation
Commercial video games are typically developed as proprietary closed source software products, with the source code treated as a trade secret (unlike open-source video games). When there is no more expected revenue, these games enter the end-of-life as a product with no support or availability for the game's users and community, becoming abandoned.
Description
In several of the cases listed here, the game's developers released the source code expressly to prevent their work from becoming abandonware. Such source code is often released under varying (free and non-free, commercial and non-commercial) software licenses to the games' communities or the public; artwork and data are often released under a different license than the source code, as the copyright situation is different or more complicated. The source code may be pushed by the developers to public repositories (e.g. SourceForge or GitHub), or given to selected game community members, or sold with the game, or become available by other means. Source code availability in whatever form allows the games' communities to study how the game works, make modifications, and provide technical support themselves when the official support has ended, e.g. with unofficial patches to fix bugs or source ports to make the game compatible with new platforms.
List
Open engine and game data
The games in this table were released under a free and open-source license with free content which allows reuse, modification and commercial redistribution of the whole game. Licenses can be public domain, GPL, BSD, Creative Commons, zlib, MIT, Artistic License or other (see the comparison of Free and open-source software and the Comparison of free and open-source software licenses).
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information |
|---|---|---|---|---|---|---|---|
| Abuse | 1995 | 2003 | Run and gun | Public domain software | Public domain and Proprietary* | Crack dot Com | Game source code was released as public domain along with the shareware-released media files.[1] Only shareware data, excluding the sound effects, is in the public domain; the rest is proprietary. In 2016 a community developer released a "20th anniversary source port"[2][3] which enabled custom resolutions, OpenGL rendering, Xbox 360 controller support and fixed the music. |
| Adventureland | 1978 | 1980 | Text Adventure game | Public domain software | Public domain | Scott Adams | Scott Adams Adventureland's[4] source code was published in SoftSide magazine in 1980[5] and the database format was subsequently used in other interpreters such as Brian Howarth's Mysterious Adventures series.[6] |
| Alien Bash I+II | 1993 | 2014 | Run and gun | public domain software | public domain[7] | Glen Cumming | Glen Cumming provided media and material of his Amiga games AlienBash and AlienBash II to the fan community, who was able to restore source code in 2014.[8] |
| AstroMenace (now OpenAstroMenace) | 2006 | 2007 | Arcade | GPLv3+ | CC BY-SA 3.0 | Viewizard | Based on AstroMenace which was released in February 2007 as shareware for Windows and freeware for Linux.[9] Also the source code of another Viewizard game, the puzzle collection Memonix, was released.[10] |
| Beyond the Titanic | 1986 | 2009 | Text adventure | GPLv2 | GPLv2 | Apogee Software | Game source released on March 20, 2009.[11] |
| Blades of Exile | 1997 | 2007 | RPG | GPLv2 | GPLv2 | Spiderweb Software | Source code and artwork was released by Jeff Vogel (Spiderweb Software) under a GPL license in June 2007.[12] |
| Clonk series (now OpenClonk) | 1994 | 2010/2014 | Action, RTS, Platform | ISC | CC BY-SA 3.0 | RedWolf Design / Matthes Bender | For the series (Clonk 1, Clonk 2 Debakel, Clonk 3 Radikal, Clonk 4 World, Clonk Planet, Clonk Endeavor and Clonk Rage) the C++ source code was released under the "Clonk Source Code License (ISC License)".[13] The content of the original game series was released under the CC BY-NC.[14] Based on Clonk Rage code base the community continues the development as OpenClonk under ISC license and content as CC BY-SA. |
| Colobot | 2001 | 2012 | Educational game, RTS | GPLv3 | GPLv3 | Epsitec SA | Game source released on March 26, 2012.[15] |
| Colossal Cave Adventure | 1976 | 2000/2005 (?) | Text Adventure | Public domain software[16][17][18] / BSD license (2017) | no artwork (Public domain software) | Will Crowther | Source code variants are at least available as far back as 2000.[19] An authentic version was retrieved in 2005 "from a backup of Don Woods's student account at the Stanford Artificial Intelligence Lab (SAIL)".[16] In February 2017 Eric S. Raymond was involved in the release of version 2.5, under BSD license, the last release by the original author alone.[20][21][22] |
| Cylindrix | 1996 | 2001 | Arcade, Shooter | LGPL | LGPL | Goldtree Enterprises / Softdisk | Around December 2001 the games was ported from DOS to Windows and released under the LGPL to the public.[23][24] |
| Cytadela (or The Citadel) | 1995 | 2006 | FPS | GPLv3+ | GPLv3+ | Virtual Design | Upon its retail release, Cytadela received generally favorable reviews.[25] In early 2006 the original Cytadela developer offered the Amiga source code of the FPS game to the community, which started a conversion project hosted on SourceForge.[26][27][28] Ported to several platforms, latest version released in 2013. |
| Dragonfire | 1982 | 2003 | action | public domain software | public domain | Imagic / Bob Smith | Source code of this Imagic Atari 2600 game was released by developer Bob Smith on May 24, 2003 into the public domain.[29][30][31] Many more Atari games got disassembled and commented by the Atari community.[32] |
| Eat The Whistle - France 98 | 1998 | 2004 | Sports game | GPLv2[33] | GPLv2 | Hurricane Studios | The France 98 football Simulation video game was released for the Amiga in 1998. Around 2004 Eat the Whistle was released under the GPL on Sourceforge, together with the point and click adventure Escape Towards The Unknown GPL.[34] Later ported to many other platforms.[35] |
| Fish Fillets (now Fish Fillets NG) | 1998 | 2002 | Puzzle | GPLv2+ | GPLv2+ | Altar Games | Released commercially as Fish Fillets in 1998. Source released in 2002 under the GPL. |
| Gladiator | 1995 | 2002 | top down perspective action game | GPLv2 | GPLv2 | Forgotten Sages Games | Released in 1995 as DOS shareware game,[36] in 2002 the game's source code was released under GPL by the developers. Development and porting by the game's community continued on SourceForge under the name OpenGlad.[37] |
| Glitch | 2009 | 2013 | MMO | CC0 (client and other parts) | CC0 | Tinyspeck | In 2013, one year after the MMO was shut down, most of the artwork and parts of the code were released under the CC0 license.[38][39] |
| God of Thunder | 1993 | 2020 | Puzzle video game | Public domain software | Public domain (music and sound effects) Proprietary (game graphics) |
Adept Software | On March 27, 2020, Ron Davis released the source code and sound assets as public domain on SourceForge.[40] |
| Gravity Force 2 | 1994 | 2008 | Multidirectional shooter | CC BY-SA 4.0 | CC BY-SA 4.0 | Jens Andersson & Jan Kronqvist | On September 21, 2008 the developers of the Amiga shareware title Gravity Force 2 released the source code for "nostalgic interest" without specified license.[41] In April 2017 the authors clarified the game and source code license as CC BY-SA 4.0.[42] |
| Habitat | 1985 | 2016 | early MMORPG | MIT | MIT | Randy Farmer and Chip Morningstar/Lucasfilm Games | The Museum of Art and Digital Entertainment received the game's source code from its original developers,[43] and restored the code in a Hackathon.[44] In July 2016, the source code was uploaded to GitHub under MIT license.[45][46] |
| Inside a Star-Filled Sky | 2011 | 2011 | Top-down shooter | Public domain software | Public domain | Jason Rohrer | Inside a Star-filled Sky, for purchase for $12,[47] was put by developer Jason Rohrer into public domain,[48] like many other of his games.[49] |
| Kaiser II | 1988 | 2003 | economical simulation | GPLv2 | GPLv2 | Carsten Strotmann | In 2003 Kaiser II author Carsten Strotmann released the source code under the GPL as Free Software.[50][51] |
| Kroz | 1987 | 2009 | Maze | GPLv2 | GPLv2 | Apogee Software | Game source released on March 20, 2009.[11] |
| Lemonade Stand | 1973 | 1979 | Business simulation game | Public domain software | no artwork (Public domain software) | Bob Jamison, Charlie Kellner / MECC | The Applesoft BASIC source code was available since 1979.[52][53] The game was later ported to modern REALbasic and released as free and open-source software for many platforms like Windows and MacOS.[54] |
| Lugaru | 2005 | 2010 / 2016 (assets) | Action-adventure game | GPLv2 | CC BY-SA 3.0 | Wolfire Games | Open sourced with the first Humble Indie Bundle by Wolfire Games.[55] In November 2016 David Rosen relicensed all assets under the open content CC BY-SA 3.0 Creative Commons license which makes Lugaru a fully free video game.[56] In begin 2017 an open source HD version followed.[57][58] |
| Maelstrom | 1992 | 1995/2010 | Shoot 'em up | GPLv2 | CC BY 3.0 | Ambrosia Software | Asteroids clone. 1995 source released under GPL. In 2010 Andrew Welch and Ian Gilman released the game's contents under a Creative Commons license.[59] |
| MegaBall | 1991 | 2012 | Breakout clone | Apache-2.0 | Apache-2.0 | Mackey Software/Ed Mackey | The Amiga game MegaBall was programmed by Mackey Software in 1991–1993. Inspired by Taito's Arkanoid it has several features more. The original author released in 2012 the source code of MegaBall under the Apache license v2.[60][61] |
| NoGravity | 1996 | 2005 | 3D space space shooter / Wing Commander | GPLv2 | GPLv2 | realtech VR | Source code released by realtech VR on February 16, 2005.[62] |
| Nothing to Hide | 2013 | 2013 | Stealth game | CC0 | CC0 | Nicky Case | The crowdfunded surveillance/privacy-themed video game prototype by indie game developer Nicky Case was crowdfunded and opened under CC0 on GitHub between 2013 and 2015.[63][64][65][66][67] |
| PaybackTime 2 | 1997 | 2014 | turn-based tactics game | public domain software | public domain | Niko Nevatie and Kari Luojus | The turn-based tactics game, inspired by Laser Squad and UFO: Enemy Unknown, was developed by two Finish students in Turbo Pascal and x86 assembly. They marketed their game as shareware for DOS in 1997.[68] The authors released the game in August 2014 as public domain software, including the assets.[69] |
| Pinball Construction Set | 1983 | 2013 | pinball video game | MIT | MIT | Bill Budge, Electronic Arts | In 2013, Budge released the source code to the Atari 800 and Apple II version of Pinball Construction Set to the public on GitHub under the MIT license.[70][71][72] |
| Planet Blupi | 1997 | 2017 | Platformer | GPLv3 | GPLv3 | Epsitec SA / Daniel Roux, Denis Dumoulin, Mathieu Schroeter | Planet Blupie was freed (source code and all media files) and ported to all major platforms (Linux, macOS and Windows) for its 20th anniversary, released Open source under GPLv3 on GitHub in 2017.[73][74] Speedy Blupi, part of Blupi series, has been released as freeware by EPSITEC too and is available at blupi.org.[75] |
| RuneSword II | 2001 | 2004[76] | Turn-based strategy | Public domain software[77] | Public domain | CrossCut Games | In 2004 CrossCut Games released the game into the public domain on SourceForge.[78] Since then there is continuous development by the community on the game.[79] |
| Ryzom | 2004 | 2010 | MMORPG | AGPL | CC BY-SA 3.0 | Nevrax | In response to the folding of Nevrax, the Free Ryzom Campaign was launched in order to gather enough funds from donations ("Crowdfunding") from the community to purchase Ryzom and release the game as free software. The campaign was almost successful with €172,988 of the required €200,000 gathered.[80][81] On May 6, 2010, Winch Gate announced the full release of source code and artwork, and a partnership with the Free Software Foundation.[82][83] |
| Seven Kingdoms | 1996 | 2008 | RTS | GPLv2 | GPLv2 and Proprietary* | Enlight | Source code released by Enlight in November, 2008. *Music is proprietary[84][85] |
| SimCity (Micropolis) | 1989 (as SimCity) | 2008 (as Micropolis) | City-building game | GPLv3[86] | GPLv3 | Maxis (Will Wright/Don Hopkins) | Source code released by Don Hopkins under GPL in 2008. For trademark reasons released under the original working title Micropolis, also known as OLPC SimCity.[87] |
| Sissyfight 2000 Returns | 2014 | 2018 | Multiplayer | MIT | CC BY | Zimmerman, Clark, and Bhatnagar | On April 30, 2013, Zimmerman, Clark, and Bhatnagar announced a crowdfunding campaign on Kickstarter to revive Sissyfight.[88] The campaign was funded on May 30, 2013 with a final total of $22,735.[89] First Beta versions were released 2014. On February 9, 2018 the source code was released under the open source MIT license and the assets under the CC BY Creative Commons license on GitHub.[90] |
| Soldat | 2002 | 2020 | Run and gun | MIT | CC BY 4.0 | Team Soldat | Source code was released under MIT license on GitHub,[91][92] assets followed shortly after under CC-BY 4.0.[93] |
| Sopwith | 1984 | 2000 | Shoot 'em up | GPLv2 | GPLv2 | David L. Clark | The C and x86 assembly source code to Sopwith was released in 2000,[94] at first under a non-commercial use license, but later under the GNU GPL at the request of fans.[95] |
| Stunt Copter | mid 1980 | ? | Arcade | Public domain software | Public domain | Duane Blehm / HomeTown Software | After Duane Blehm death in 1988, his parents released Stunt Copter's and his other games' (like ZeroGravity, Cairo Shootout and PUZZ'L) binaries and source code into the public domain.[96] |
| Supernova | 1987 | 2009 | Text adventure | GPLv2 | GPLv2 | Apogee Software | Game source released on March 20, 2009.[11] |
| Team 47: GoMan | 1997[97][98] | 1998 | Mech game | public domain software | public domain | 47-TEK | Released artwork and source code to public in May 1998.[99][100] As the Internet Archive has not saved the content of the now offline GoMan page in the end of the 1990s, currently there are no known mirrors on the web; the source code seems as of 2017 to be lost.[100] |
| Triplane Turmoil | 1996 | 2009 | side-scrolling dogfighting flying game | GPLv3 | GPLv3 | Dodekaedron Software | In 1996 Triplane Turmoil was originally released as shareware DOS game. In 2009 Dodekaedron Software Creations Oy placed Triplane Turmoil's source code, documentation, images and sounds under the GPLv3, hosted on Sourceforge.[101][102] The community continued the support and ported the game to other platforms (Linux, Windows) via SDL. |
| Tyrian (now OpenTyrian) | 1995 | 2007 | Scrolling shooter | GPLv2 | Freeware/CC BY 3.0 US[103][104] | World Tree Games Productions / Epic MegaGames (Jason Emery, Daniel Cook) | The OpenTyrian team ported the closed-source Pascal code of Tyrian to C with permission of Jason Emery in February 2007. The graphic artist Daniel Cook released the artwork shortly after. |
| VGA Civil War Strategy Game | 1995 | 2017 | turn based strategy | MIT | MIT | W. R. Hutsell | In 2017 Mr. Hutsell gave the source code of VGA Civil War Strategy Game to Dave Mackey, who ported the game for modern platforms (Windows, Mac, Linux) with the help of SDL and other open source libraries from QuickBASIC to QB64.[105] The source code is released on GitHub under a MIT license.[106] |
| Voxelquest | 2014 | 2016 | open world simulation | MIT | MIT | Gavan Woolery | After a successful crowdfunding project on Kickstarter to develop an open-world simulation game in 2014,[107] Gavan Woolery developed several iterations of the game's engine. After running out of funding for further development, he open-sourced with support of the backers the game's engine on github.com under MIT license in August 2016.[108][109] |
| Wander | 1974 | 2015 | Text adventure | public domain (?) | public domain (?) | Peter Langston | In April 2015 the lost thought source code of Wander, one of the earliest mainframe text adventures, could be acquired from the original author.[110][111] |
| Warfare Incorporated (now Hostile Takeover) | 2003 | 2014 | RTS | FreeBSD | BSD license | Spiffcode | In July 2014 the game's source code and content got open sourced with the BSD license under the name "Hostile Takeover" on GitHub.[112][113] As result the game was ported by the game's community to alternative platforms like the Pandora handheld.[114] |
| Warzone 2100 | 1999 | 2004/2008 | RTS | GPLv2 | GPLv2, CC | Pumpkin Studios/Eidos Interactive | 3D real-time strategy game with a unit design system. First source part was released by Pumpkin Studios/Eidos Interactive in 2004 and the rest was released in 2008.[115] |
| Word Whiz | 1988 | 2009 | Educational game | GPLv2 | GPLv2 | Apogee Software | Game source released on March 20, 2009.[11] |
| Zork (also known as Dungeon or Dungeon Adventure) | 1977 | 1978 | Text adventure | Public domain software | Public domain | Robert M. Supnik / Infocom | Public domain software ports with source code based on the first "Dungeon" version of Zork, are available in various repositories.[116][117] Also, Infocom allowed the distribution of the early Fortran version. Original version from MIT.[118][119] |
Open-source games with free of charge data
Only the game engines in this table are developed under an open-source license, which means that the reuse and modification of only the code is permitted. The assets are provided free of charge to the final user, but with some restrictions. Note that both the engine and the game code must be available under a license approved by the OSI and/or the FSF, if it was made with a licensed engine.
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information |
|---|---|---|---|---|---|---|---|
| Allegiance (now FreeAllegiance) | 2000 | 2004 | real-time strategy and Space combat simulator | MIT (earlier Shared Source[120]) | Freeware | Microsoft Research | Released by Microsoft Research under a shared source license ("MSR-SSLA") 2004.[121] On July 27, 2017 Microsoft Research changed the license from MSR shared source license to MIT license.[122] |
| Amulets & Armor | 1997 | 2013 | first person role-playing video game | GPLv3 | Freeware | United Software Artists | In 2013 Amulets & Armor was re-released as freeware on the game's official site and the source code under GPLv3 on GitHub.[123][124] Work continues for ports to newer systems (Windows, MacOS) and general bug fixes.[125][126] |
| Ares (now Antares) | 1996 | 2008 | Space Strategy video game | LGPLv3[127] | CC BY-NC-SA/CC BY-NC-ND/Freeware | Nathan Lamont/Bigger Planet Software | Released in 2008. Under continued development for modern systems as "Antares" via GitHub.[128] |
| Avara | 1996 | 2016 | Shooter game | MIT | Freeware | Ambrosia Software / Juri Munkki | The MacOS classic game became open source in 2016 when Munkki released the source code upon the game's 20th anniversary.[129] |
| Buzz Aldrin's Race Into Space (now Race Into Space) | 1993 | 2007 | Simulation | GPLv2[130] | Freeware[131] | Strategic Visions/Fritz Bronner | A port of Buzz Aldrin's Race Into Space to modern operating systems. The license fell back to Bronner as he had a contract clause with Interplay stating that in case Interplay went bankrupt or no distribution happened for some time.[131] |
| Cart Life | 2011 | 2014 | Simulation | Artistic-2.0/MIT-like (engine/game code) | Freeware | Richard Hofmeier | In March 2014 the game was removed from all digital distributions and the source code and game was made available for free online, with Hofmeier saying he was finished supporting the game.[132] His webpage went later offline[133] but the source code was mirrored on GitHub.[134][135] |
| Corncob 3D | 1993 | 2016 | Flight simulator | Public domain software | Freeware | Pie in the Sky / Kevin Stokes | The game became around 2016 freeware and open source.[136] |
| Dink Smallwood | 1997 | 2003 | Action RPG | Zlib inspired own license[137] | Freeware[138] | Robinson Technologies | Source code published on July 17, 2003 from Seth Robinson.[139] 2008 Artwork published (without some sounds) under a Zlib license.[140] In October 2017 the HD version became fully open source and freeware, too.[141] The source code became available on GitHub shortly after.[142] |
| Gates of Skeldal | 1998 | 2008 | Dungeon crawler role-playing video game | GPLv3 | Freeware | Napoleon Games | On 19 November 2007 the game was made freeware by the Czech developer, in 2008 the source code was released under GPLv3 on a SourceForge repository.[143][144] Later it was translated by fans to English and ported to linux.[145] |
| Glider 4.0 | 1991 | 2016 | Flight simulator | MIT | Freeware | John Calhoun | On January 26, 2016, the source code for Glider 4.0 was uploaded to GitHub.[146] |
| Glider PRO | 1994 | 2016 | Flight simulator | GPLv2 | Freeware | John Calhoun | On 27 Jan 2016, the source code, graphics, and sound data for Glider PRO were released on GitHub with the source code being licensed under the GNU General Public License v2.[147][148] |
| Gloom | 1995 | 2017 | FPS | unlicense | "for historical purposes" | Black Magic | In January 2017 the assembly and BlitzBasic 2 source code of the Amiga Doom clone Gloom was released as public domain software under unlicense on GitHub.[149] The assets were released "for historical and archiving purposes.".[150] |
| Gunocide II | 2000 | 2001 | Galaga-like 2D shooter | GPLv2 | Freeware | Alexander Bierbrauer and Oliver Weiler | Developed around 2000.[151] After being succesless commercially published via a publisher,[152] the game was released as freeware and under GPL. 2002 ported to Linux and hosted on SourceForge as "G2ex".[153][154] |
| H-Craft Championship | 2007 | 2015 | science fiction racing game | zlib license | Freeware | Irrgheist | H-Craft Championship was developed by the independent game studio Irrgheist[155] and released by Manifesto Games[156]/Akella in 2007.[157] In 2014, the developers released the game as freeware[158] and the source code under the zlib license in February 2015.[159][160] |
| Haunts: The Manse Macabre | 2012 | 2012 | turn based strategy | BSD[161] | CC BY-NC-SA | Rick Dakan | The 2012 with $29,000 crowdfunded[162] and in Go programmed game was put on GitHub after the money for further development run out.[163][164] While a volunteer keeps updating the almost finished prototype,[165] the against the Go 1.0 API build game fails to compile with newer compilers and Go versions. |
| Hypercycles | 1995 | 2017 | Shooter | GPLv3 | Freeware | Bob Hays | Released in January 2017 on GitHub.[166][167] As August 16, 2020, the repository was removed from GitHub. |
| Infinity | 2002 | 2016 | RPG | GPLv3+ | CC BY-NC-ND 4.0 / CC BY-NC-SA 4.0 | Affinix Software | Developed in 2002 as commercial Game Boy Color title (~90% finished) the game was never published. Finally released as non-commercial freeware with source code in August 2016.[168][169][170] |
| Iron Seed | 1994 | 2013 | Space trading and combat simulator | GPLv3 | Freeware | Channel 7 | Released as freeware by the authors to promote the development of Iron Seed 2 in the 2000s. Source opened under the GPL by the developers in 2013.[171] |
| Magic Land Island (now Pocket Island) | 2011 | 2012 | Casual game | MIT | CC BY-NC-SA | Wooga | Magic Land Island was launched during the GDC Europe in August 2011. In June 2012 the HTML5 game was open sourced under the name Pocket Island on GitHub under MIT license and with the assets under Creative Commons license CC BY-NC-SA.[172][173] |
| Marathon 2: Durandal (now Aleph One) | 1995 | 2000 | FPS | GPLv2 | Freeware | Bungie | Released by Bungie on January 17, 2000.[174] |
| Marathon Infinity (now Aleph One) | 1996 | 2011 | FPS | GPLv3 | CC BY-NC-SA 3.0 | Bungie | Released by Bungie in 2011.[175] |
| Meridian 59 | 1995 | 2012 | MMORPG | GPLv2 (excluding compression and audio libraries) | Freeware | Archetype Interactive | As of February 2010 Meridian 59 has been turned over to the original technical developers, Andrew and Chris Kirmse. On September 15, 2012 they released the game to the public as Freeware and most of the source code under the GPLv2 license.[176] |
| The Pit Puzzle | 1997 | 2011 | Puzzle game | Apache-2.0 | Freeware[177] | Abe Pralle / Plasmaworks | The DOS game source code was released around 2011 by the author Abe Pralle under Apache 2.0 License on GitHub.[178] |
| Postal | 1997 | 2016 | Top-down shooter | GPLv2 | Freeware | Running with Scissors | In 2015 the Running with Scissors developers announced that they will release the source code of the game "if someone promises to port it to the Dreamcast."[179] In June 2016 the developers gave the source code to a community developer who ported the game to Linux for the OpenPandora handheld.[180][181] On December 28, 2016, the source code was released on Bitbucket under the GPLv2.[182][183] |
| Project Starfighter | 2001 | 2008 | Shoot 'em up | GPLv2[184] | Freeware[185] | Parallel Realities | |
| Star Control II (now The Ur-Quan Masters) | 1992 | 2002 | Action RPG | GPLv2 | CC BY-NC-SA 2.5 | Toys for Bob (Fred Ford / Paul Reiche III) | Source code of the 3DO version GPL-released in 2002.[186] |
| Star Ruler 2 | 2015[187] | 2018 | Real-time strategy, 4X | MIT | CC CC-BY-NC 2.0 | Blind Mind Studios | Released on GitHub as an open-source project, including assets under the CC-BY-NC (but not music) on July 22, 2018.[188][189] |
| Starshatter: The Gathering Storm | 2004 | 2011 | Space combat simulator | New BSD License | Freeware | Destroyer Studios / Matrix Games | Source code released by Destroyer Studios/Matrix Games on December 14, 2011.[190][191] |
| Strange Adventures in Infinite Space | 2002 | 2005/2009 | Space Roguelike | GPLv3 | CC BY-NC 4.0 | Digital Eel | Source was released under GPL by Digital Eel in 2005.[192][193] Content became freeware 2009.[194] License changed to GPLv3 and assets to CC-BY-NC-4.0 on May 18, 2020.[195] |
| Tread Marks | 2000 | 2017 | Tank Combat/Racing | GPLv3 | Freeware | Longbow Digital Arts / Seumas McNally | Won in 2000 the Seumas McNally Grand Prize. On January 20, 2017 the source code was released as open source on github.com and the game itself as freeware.[196][197] A port to Linux and MacOS is in progress.[198] In September 2017 a version for the Linux-based OpenPandora was released.[199] |
| Tribal Trouble | 2005 | 2014 | RTS | GPLv2 | Freeware | Oddlabs | In September 2014 the game's source code was released to the public on GitHub and is now open source under the GPLv2.[200] Development continues in a community fork.[201] |
| Tribes 2 | 2001 | 2012 | FPS | MIT/Proprietary (engine/game code) | Freeware | Dynamix | Many commercial titles were developed using the Torque engine.[202] GarageGames released Torque 3D under the MIT License on September 20, 2012.[203] The Tribes 2 source code beside the Torque engine is not available.[204] |
Open-source games
Only the game engines in this table are developed under an open-source license, which means that the reuse and modification of only the code is permitted. The assets are not provided for free and must be bought by the final user. Note that both the engine and the game code must be available under a license approved by the OSI and/or the FSF, if it was made with a licensed engine.
| Title | First release | Source code release | Genre | Engine license | Original developer | Additional information |
|---|---|---|---|---|---|---|
| Amnesia: A Machine for Pigs | 2013 | 2020 | Survival horror | GPLv3 | The Chinese Room | On September 23, 2020, Frictional Games released the source code for this game.[205] Source code was released on GitHub under the GPLv3.[206] |
| Amnesia: The Dark Descent | 2010 | 2020 | Survival horror | GPLv3 | Frictional Games | On September 23, 2020, Frictional Games released the source code for this game on its 10th release anniversary.[205] Source code was released on GitHub under the GPLv3.[207] |
| Arx Fatalis (now Arx Libertatis) | 2002 | 2011 | RPG | GPLv3 | Arkane Studios | The design of Arx Fatalis was heavily influenced by Ultima Underworld. Game source released by Arkane Studios on January 14, 2011.[208] Based upon this source code the formed Arx Libertatis-project created Fan-made patches and Source ports.[209][210] |
| Aquaria | 2007 | 2010 | Action-adventure | GPLv2 | Bit Blot | Open sourced with Humble Indie Bundle.[211] |
| Blake Stone: Planet Strike | 1994 | 2013 | FPS | GPLv2+[212] | Apogee Software | Released in 2013 to promote the sale of the Apogee Throwback Pack on Steam.[213][214] |
| Canabalt | 2009 | 2010 | Cinematic platformer | MIT/Proprietary (engine[215]/game code[216]) | Adam Saltsman | Released by Adam Saltsman in 2010.[217] |
| Catacomb | 1989 | 2014 | Top-down shooter | GPLv2 | Flat Rock Software | Released by Flat Rock Software on June 5, 2014 on GitHub.[218] |
| Catacomb 3D | 1991 | 2014 | FPS | GPLv2 | Flat Rock Software / id Software | Released by Flat Rock Software on June 5, 2014 on GitHub.[218] |
| Command & Conquer, Command & Conquer: Red Alert | 1995 | 2020 | RTS | GPLv3 | Westwood Studios | The games' code was released along with the Command & Conquer Remastered Collection in order to aid in the development of mods.[219] |
| Commander Keen in Keen Dreams | 1991 | 2014 | Platformer | GPLv2+ | id Software | In September 2014, after an Indiegogo crowdfunding campaign,[220] the game's source code was released on GitHub.[221][222] |
| CoreBreach | 2011 | 2012 | Racing game | MIT/GPLv2 (engine/game code)[223] | CoreCode | Futuristic "anti-gravity" racing game with combat. Source was released after a sales quota was met.[223] |
| Cortex Command | 2012 | 2019 | Action game | GPLv3 | Data Realms LLC | The indie game was in development since 2001, which won an IGF award in 2009,[224] was finally released in 2012.[225] In July 2019 the source code was released under GPLv3 on github.[226][227] As of end of 2019 the work on a community continuation, dubbed "Cortex-Command-Community-Project", is ongoing.[228] |
| Delver | 2012 | 2018 | First-person action roguelike dungeon crawl | Apache-2.0/zlib (engine/game code) | Priority Interrupt | Developed using the libGDX framework; on November 15, 2018, Chad Cuddigan released the source code under the GPLv2.[229] Changed to a modified version of the zlib license on November 23, 2018,[230] and changed to the regular zlib license on September 21, 2020.[231] |
| Doom (3DO) | 1995 | 2014 | FPS | MIT | Logicware | On November 30, 2014, the source code of the 3DO Interactive Multiplayer port of the game was released by Rebecca Heineman (sole developer of the port) under an MIT license, a different license than the Doom version for Linux, and the Atari Jaguar port.[232][233][234][235] |
| Doom (Linux) and Doom II: Hell on Earth | 1993/1994 | 1997/1999 | FPS | GPLv2 | Id Software | Game source released on December 23, 1997, placed under GPL on October 3, 1999. |
| Doom (SNES) | 1995 | 2020 | FPS | GPLv3 | Sculptured Software | On July 14, 2020, Randy Linden uploaded the source code for his Super Nintendo Entertainment System conversion of Doom to GitHub.[236] |
| Doom 3 | 2004 | 2011 | FPS | GPLv3 | Id Software | Game source released on November 22, 2011.[237] |
| Doom 3: BFG Edition | 2012 | 2012 | FPS | GPLv3 | Id Software | Source code released on November 26, 2012 on GitHub.[238] |
| DROD series | 1997 | 2000 | Puzzle game | MPLv1.1[239] | Webfoot / Erik Hermansen | After the author reacquired the rights to the game from the original publisher Webfoot,[240] he released the source code of the game engines.[239][241] The source code releases include DROD: King Dugan's Dungeon, DROD: Journey to Rooted Hold, DROD: The City Beneath, DROD: Gunthro and the Epic Blunder, DROD: The Second Sky, and DROD RPG: Tendry's Tale without its media assets.[242] |
| Eldritch | 2013 | 2014 | FPS, roguelike | zlib License | Minor Key Games | In April 2014, the game's source code was released to the public under a permissive zlib license. Content still proprietary and game being sold.[243][244] |
| Flotilla | 2010 | 2020 | 3d tactic game | Ms-PL/zlib (engine/game code) | Blendo Games | Indie game developer Blendo games released the source code to Flotilla on its 10th release anniversary.[245][246] The source code is Zlib licensed on github, but assets are not included.[247] |
| Gish | 2004 | 2010 | Action | GPLv2 | Cryptic Sea | Source opened with Humble Indie Bundle by Wolfire Games.[248][249] |
| Glypha III | 1990s | 2016 | Arcade | MIT | John Calhoun | On 27 Jan 2016, the source code, graphics, and sound data for Glypha III were released on GitHub with the source code being licensed under the MIT License.[146][250] Updated ports for MacOs and iPhone were created afterward.[251][252][253] A cross-platform OpenGL based port was released around May 2018 on GitHub.[254] |
| Good Robot | 2016 | 2020 | Multidirectional shooter | MIT | Pyrodactyl Games | On August 3, 2020, Arvind Raja Yadav from Pyrodactyl Games released the source code for three of their games (Unrest, Will Fight for Food and Good Robot) under the MIT License on GitHub.[255] |
| Hammerfight | 2009 | 2011 | 2D physic based combat game | zlib license[256] | Konstantin Koshutin | For the third Humble Indie Bundle[257][258] Ryan C. Gordon ported the underlying game engine, "Haaf's Game Engine", to Linux and Mac OS X, and released source code under the zlib license.[259][260] Relish Games released the original version of HGE 1.8.1 for Windows/DirectX to GitHub under zlib license, too.[261] |
| Heretic | 1994 | 1999 | FPS | GPLv2 | Raven Software | Game source released on January 11, 1999 under a very restrictive license,[262][263] relicensed to GPL on September 4, 2008.[264][265][266] The ACC script compiler was not included in the GPL re-release. |
| Hexen: Beyond Heretic | 1995 | 1999 | FPS | GPLv2 | Raven Software | Game source released on January 11, 1999 under a very restrictive license,[262][263] relicensed to GPL on September 4, 2008.[264][265][266] The ACC script compiler was not included in the GPL re-release. |
| Hexen II | 1997 | 2000 | FPS | GPLv2 | Raven Software | Game source released on November 10, 2000.[267] |
| Hovertank 3D | 1991 | 2014 | FPS | GPLv2 | Flat Rock Software/id Software | Released by Flat Rock Software on June 5, 2014 on GitHub.[218] |
| Lemma | 2014 | 2014 | Voxel FPS open world parcour[268] | MIT | Evan Todd | Despite an unsuccessful crowdfunding campaign in 2014,[269] Lemma was released commercially by the developer DRM-free and also on Steam. The source code is openly developed and available on GitHub under a MIT license.[270][271] |
| Machines: Wired for War | 1999 | 2020 | Real-time strategy | GPLv3 | Charybdis/Nightdive Studios | The game was released by the new rights holder Nightdive Studios in 2020.[272] The source code is under GPLv3 on Github.[273] The assets are available too from the original developer's webpage.[274] |
| Monster RPG 2 | 2010 | 2012 | JRPG | zlib License | Nooskewl | After a successful Indiegogo campaign, released by Nooskewl under a Public domain like license ("Give it Your Own License") on November 11, 2012.[275][276] Later changed to zlib license, and the content sold again to be able to pay the server bills.[277] |
| Myst Online: Uru Live | 2007 | 2010 | MMORPG | GPLv3 | Cyan Worlds | "Myst Online: Uru Live" struggled to attract subscribers and was canceled after its first year. Cyan release the game as an open source game in 2010.[278] |
| Natural Selection | 2002 | 2014 | FPS | GPLv2 (most code) / custom (external libraries)[279] | Unknown Worlds Entertainment | In January 2014 Unknown Worlds released the source code for download on GitHub.[280] |
| The Operative: No One Lives Forever | 2000 | 2010 | FPS | GPL | Monolith Productions | In 2001, Monolith Productions released a set of editing tools for No One Lives Forever that included the level editor and model editor used for development.[281] The team also released the source code for NOLF (version 1.003 on Windows) that year to "support the fan base by offering the tools to create their own levels".[282][283] It is available both as a download, as well as on the Game of the Year Edition CD-ROM.[281] Years later around 2013 Lithtech source code became available on GitHub under GPL,[284] and work for merging game code and engine started.[285] |
| No One Lives Forever 2: A Spy in H.A.R.M.'s Way | 2002 | 2011 | FPS | GPLv2[286] | Monolith Productions | Source code released by Monolith Productions/Sierra Entertainment as part of a modding toolkit.[287] |
| Pararena 2 | 1992 | 2016 | Action sport game | MIT | John Calhoun | On 27 Jan 2016, the source code was released on GitHub licensed under the MIT license.[288][289] |
| Penumbra: Overture | 2007 | 2009 | Survival horror with FPS aspects | GPLv3 | Frictional Games | Developed by Swedish[290] developer Frictional Games, the game blends the genres of survival horror, first-person shooter, and adventure. Open sourced with Humble Indie Bundle.[291] |
| Quake | 1996 | 1999 | FPS | GPLv2 | Id Software | Game source released on December 21, 1999. |
| Quake II | 1997 | 2001 | FPS | GPLv2 | Id Software | Game source released on December 22, 2001. |
| Quake III Arena | 1999 | 2005 | FPS | GPLv2 | Id Software | Game source released on August 19, 2005. |
| Return to Castle Wolfenstein | 2001 | 2010 | FPS | GPLv3 | Gray Matter Interactive/Nerve Software | The source code for Return to Castle Wolfenstein and Enemy Territory was released under the GNU General Public License (GPL) on August 12, 2010.[292][293] |
| Revenge of the Titans | 2010 | 2011 | Tower Defense, RTS | BSD-3-Clause | Puppy Games | Java based game. Source code was released by Puppy Games with the success of the second Humble Indie Bundle.[294] |
| Rise of the Triad | 1994 | 2002 | FPS | GPLv2 | Apogee Software/3D Realms | Game source released on December 20, 2002.[295] |
| Serious Sam (Serious Engine) | 2001 | 2016 | FPS | GPLv2 | Croteam | In March 2016, Croteam released Serious Engine v1.10 as free and open-source software on GitHub under the GNU General Public License.[296][297] |
| Seven Kingdoms II | 1999 | 2009 | RTS | GPLv2 | Enlight | Source code released in August, 2009. |
| Shogo: Mobile Armor Division | 1998 | 1998 | FPS | GPL | Monolith Productions | SDK released 1998, including the game logic for modders.[298] The Lithtech engine was not included as source code. Years later around 2013 Lithtech source code became available on GitHub under GPL,[284] and work for merging game code and engine started.[285] On end of 2019 this Lith-tech engine reworks achieved a compiling under Windows state for NOLF2, while work continues.[299] |
| Siege of Avalon | 2000 | 2003 | RPG | LGPL | Digital Tome | Source code released June 23, 2003.[300] Later one of the original developers announced the preparation of a re-release of SOA, but nothing came out of it.[301]
In September 2017 a community developer managed to fix the dependencies of the Open source release, recompile the executable, fixing several bugs and introducing higher resolution support for the game.[302] |
| Soul Ride | 2000[303] | 2003 | Snow board simulation/sport game | GPLv2[304] | Slingshot Game Technology | On 20 Jan 2003 Soul Ride's game engine source code was released to allow ports to alternative OSes.[305] |
| Spacebase DF-9 | 2013 | 2015 | Space simulator | CPAL | Double Fine | After Double Fine ended the support of the controversy ridden and incomplete game on end of 2014,[306] fans have been working to continue the game's development with the availability of the source code in May 2015 under the CPAL open-source license.[307] First patch became available in October 2015.[308] |
| Spear of Destiny | 1992 | 1995 | FPS | GPL[309] | id Software | The source code of Wolfenstein 3D, which also covered Spear of Destiny, was released on July 21, 1995. |
| Spectromancer | 2008 | 2020 | Turn-based strategy | BSD-3-Clause/Proprietary (engine/game code) | Three Donkeys LLC/Apus Software | On March 4, 2020, Ivan Polyacov from Apus Software released the source code to the Apus Game Engine, the in-house game engine by Apus Software used for Spectromancer and Astral Heroes after reaching the $50 tier on his Patreon.[310] The game code to Astral Towers was also released to patrons.[311] |
| Speed Haste | 1995 | 2012 | racing video game | public domain like license | Javier Arevalo Baeza | In 2012 the game's developer Javier Arevalo Baeza released the Borland C source code (minus some commercial library part) for "you can do whatever you want with this code" on GitHub.[312] |
| Star Wars Jedi Knight II: Jedi Outcast | 2002 | 2013 | First/Third person shooter | GPLv2 | Raven Software | Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney.[313] |
| Star Wars Jedi Knight: Jedi Academy | 2003 | 2013 | First/Third person shooter | GPLv2 | Raven Software | Release of the source code by Raven Software and Activision coincided with the closing of LucasArts by Disney.[313] |
| Super Lemonade Factory | 2012 | 2012 | Puzzle-platform | MIT | Initialsgames | Based on the Canabalt engine for iOS, and inspired by it to release the source code.[314] |
| System Shock | 1994 | 2018 | FPS | GPLv3 | Night Dive Studios | In April 2018 the Mac version's source code was released by Night Dive on GitHub,[315] fulfilling a 2016 promise.[316][317][318] After one month of development, a cross-platform source port, called "Shockolate", for modern compilers and platforms was released by community developer Chad Cuddigan.[319] |
| To Heart 2 | 2004 | 2006 | Visual novel | GPLv2 | Aquaplus | Its source code was released by Aquaplus under the GNU General Public License on December 22, 2005 along with the source code for Arurū to Asobo!!, Tears to Tiara, and Kusari.[320][321] This decision was made due to the inclusion of Xvid derived code; Xvid being distributed under the same license.[320][321] The source code for all four games is distributed upon request in CD-R format.[320] A copy of the original source code is hosted on GitHub,[322] as also an continued engine project.[323] |
| To the Moon | 2011 | 2014 | role-playing game | GPLv2 | Freebird Games | To the Moon was developed using RPG Maker XP engine in 2011. In January 2014 To the Moon was also released for OS X and Linux with the Humble Bundle X.[324] Edward Rudd ported the game with the GPLv2 RPG Maker XP game engine recreation MKXP,[324][325] other ports followed later.[326] Also a successor game by Freebird games, "A Bird Story", was ported to Linux under usage of MKXP.[327] |
| Unrest | 2014 | 2020 | Role-playing video game | MIT | Pyrodactyl Games | On August 3, 2020, Arvind Raja Yadav from Pyrodactyl Games released the source code for three of their games (Unrest, Will Fight for Food and Good Robot) under the MIT License on GitHub.[255] |
| Urban Chaos | 1999 | 2017 | Action-adventure game | MIT | Mucky Foot | In May 2017 Mucky Foot's Mike Diskett released the source code of Urban Chaos under the MIT license on GitHub.[328] |
| Vangers | 1998 | 2016 | racing and role-playing genre | GPLv3 | K-D Lab | In March 2016, Vangers source code was released[329] under GPLv3 license. Data was not freed though, so one still needs data files from Steam or GOG.com released in order to run the game. |
| Vox | 2013 | 2015 | open world simulation | GPLv3 | AlwaysGeeky Games | Vox started life as an entry into the Ludum Dare competition.[330][331] The game was successfully Steam Greenlighted on November 12, 2013.[332] Around end of 2015 the source code of Vox was made available as open-source software under the GPLv3 on GitHub.[333] |
| Wolfenstein 3D | 1992 | 1995 | FPS | GPL[309] | id Software | The source code of Wolfenstein 3D, which also covered Spear of Destiny, was released on July 21, 1995. |
| Wolfenstein: Enemy Territory | 2003 | 2010 | FPS | GPLv3 | Splash Damage/id Software | Game source released on August 12, 2010.[334][293][292] |
| World in Conflict (server code) | 2007 | 2017 | Real time strategy game | GPLv2[335] | Ubisoft | Game source released in 2017 by ubisoft after support ended in 2014.[336] |
Source-available games with free of charge data
Video games in this table are source-available, but are neither open-source software according to the OSI definition nor free software according to the Free Software Foundation. If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention. The assets are provided free of charge to the final user, but with some restrictions.
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information |
|---|---|---|---|---|---|---|---|
| Agony | 1992 | 2020 | Shoot 'em up | non-commercial use | Freeware | Art & Magic | Around 2010, graphic artist Franck Sauer started to offer the game's binary files (ADF format) for free download on his personal webpage, making the game Freeware.[337] On July 4, 2020, Yves Grolet (programmer of the game) uploaded all his Amiga development files (which included full source code for Agony) to WeTransfer.[338] |
| Anacreon: Reconstruction 4021 | 1987 | 2004 | 4x game | no license given | Freeware | George Moromisato | Developed by George Moromisato in 1987. Around 2004 the source code of the DOS version 2.00 was released.[339] |
| Beneath a Steel Sky | 1994 | 2003 | Point and click adventure | Beneath a Steel Sky Freeware License | Beneath a Steel Sky Freeware License | Revolution Software | The assembly language source code of the game was made available to the public and ScummVM in August 2003.[340][341] The source code availability made it possible for the ScummVM project to support the game, which allows the game to be played on Windows, OS X, Linux, Windows CE and other compatible operating systems and platforms. |
| Beyond Castle Wolfenstein | 1985 | 2005 | Stealth game | no license given | Freeware | Silas Warner | The reconstructed source code and the ported game was released by Silas Warner's widow in 2005.[342] |
| Beyond Protocol (now After Protocol) | 2008 | 2011 | persistent, space MMORTS | non-commercial public license | Freeware | Dark Sky Entertainment | Initial design of Beyond Protocol began in 1991.[343] A scaled up beta program began Nov 15th 2007[344] with an open-beta in 2008. When due to financial issues the game has been shut down, the source code was released on 4 May 2011 on SourceForge to the public.[345] Based on this source code, community organized development continues until today as After Protocol.[346] |
| Bob's Game | 2004 | 2016 | puzzle, action RPG | Proprietary | Freeware | Robert Pelloni | In August 2016 the source code of the game was released on GitHub under a non-commercial source available software license,[347] to allow the community to contribute. The author claims that he wrote the game originally in C, switched then to Java, and later converted it with an automatic code converter to C++.[348] |
| Carnivores 2 | 1999 | 2013 | Simulation | Proprietary | Freeware | Action Forms | A version from 2013 is available on assembla.[349] Around 2017 the source code was released via Moddb.[350] |
| Crystal Mines | 1989 | 2011 | Arcade | Custom permissive license | Freeware | Ken Beckett / Color Dreams | In August 2011 Ken Beckett, the programmer of the NES game Crystal Mines, released the source code under a custom permissive license to the public.[351][352] Artwork still proprietary but can be shared for non-commercial, personal use.[353] |
| Digger | 1983 | 2004 | Arcade | Proprietary | Freeware | Windmill Software | The original source code became available in September 2004 "for historical interest" (together with source code of other Windmill Software games as Styx).[354][355] There is also an earlier free software reverse engineered variant available by Andrew Jenner, called Digger Remastered, ported for many platforms.[356] |
| Dungeons of Daggorath | 1982 | 2001 | 3D Dungeon crawler | Freeware | Freeware | DynaMicro / Douglas J. Morgan | As for years there has been no production by the publisher Radio Shack of the game, the distributions rights fall back to the developers. Morgan released game around 2001 under a freeware like license to the public, also offering the source code.[357][358] Following, the game's community has created ports for PC,[359] Linux,[360] RiscOS[361] and PSP.[362] |
| Enemy Nations | 1997 | 2005[363] /2006[364][365] |
RTS | own non-commercial license[366] | non-commercial Freeware[366] | Windward Studios | Game source and artwork was released by Windward Studios under a non-commercial license around 2005/2006. |
| Fort Apocalypse | 1982 | 2015 | action | CC BY-NC-ND 2.5 | CC BY-NC-ND 2.5 | Steve Hales / Synapse Software | In 2007 the Atari 8-bit game was relicensed to a CC BY-NC-ND 2.5 by Steve Hales and released on IgorLabs.[367] On April 23, 2015, Steve Hales released the assembler source code to Fort Apocalypse on GitHub, also under CC BY-NC-ND 2.5, for historical reasons.[368] |
| Free Fall | 1983 | 1999 | Beat 'em up | ? | Freeware | Ian Bell / Acornsoft | In 1999, developer Ian Bell released the video game's BBC Micro assembly source code on his website.[369] Semi-serious he considers it the first ever Beat 'em up video game. |
| Flow | 2006 | 2009 | Life simulation | ? (For educational purposes) | Freeware | Thatgamecompany / Jenova Chen | Around 2009 the flash source code was made available for educational purposes by the developers.[370][371] |
| HoverRace | 1996 | 2008 | Racing | originally time limited license / later non-commercial GrokkSoft HoverRace SourceCode License.[372][373] | Freeware | GrokkSoft | Was first published under a time-limited license. In 2008 re-newed with an infinite duration license.[374] |
| In Pursuit of Greed | 1996 | 2014 | FPS | non-commercial use, "for educational and personal use only" | Freeware (non-commercial) | Mind Shear Software | Based on Softdisk Publishing's "Raven engine" which powered also ShadowCaster. The game was released (including the engine) later by the developer as non-commercial freeware in 2014.[375][376][377] |
| Kiloblaster | 1992 | 2008 | Arcade | Own license[378] | Freeware (with additional restriction) | Epic MegaGames | Allen Pilgrim declared the registered version freeware and released also the source code on August 4, 2008.[379][380] |
| Kumquat & Cantaloupe | 1996 | 2012 | Maze | undefined | Freeware | Dave Schofield | The Amiga games Kumquat & Cantaloupe, originally released as shareware titles, were re-released as freeware with source code included by the author in November 2012.[381][382] |
| Magus | 1995 | 2014 | Rogue-like | Proprietary | Freeware | Ronny Wester | Around 2014 archived on GitHub from other now offline sources.[383] A SDL port is in progress.[384] In 2000 Wester released also the Borland Pascal 7 source code of Cyberdogs (excluding some libraries he had licensed) on his website.[385] |
| Roboforge | 2001 | 2008 | Multiplayer Strategy game | "RoboForge, Personal, Non-Commercial Use End User License" | Freeware | Liquid Edge | Announced the game in July, 2000[386] by Liquid Edge the game was released on May 23, 2001.[387] From July 2008 RoboForge became an Open Source project with the source code for the Java-based client and server under a non-commercial license and as freeware.[388] The game's community continues development. |
| Rocky Racers | 2002[389] | 2004[390] | Racing game | Non-Commercial license | Freeware | Positech Games | Released around 2002 by Positech Games, the game's C++ source code was released in July 2004 to the public for free.[391] |
| Savage: The Battle for Newerth | 2003 | 2007 | online Real-time strategy, FPS | no license/proprietary | Freeware[392] | S2 Games | The game was turned freeware by S2 Games on September 1, 2006. In 2007 the source code became available to the game community,[393] who now continues development.[394] |
| Stellar Conquest III: Hostile Takeover | 1994[395] | 2006 | Stellar Conquest inspired Space simulation | open source freeware (non-commercial) | Freeware (non-commercial redistribution allowed) | NecroBones / Ed T. Toton III | The Turbo Pascal 6 source code for the VGA DOS game was released in February 2006 together with the game itself as freeware by the developer.[396] |
| Stellar Frontier | 1997 | 2008 | Space simulation | STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (non-commercial license)[397] | STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (non-commercial license) | Stardock | Stellar Frontier was developed by Doug Hendrix in 1995 and was later licensed and published by Stardock. On August 4, 2006, Stardock Systems closed the official master server. On November 18, 2008, the game source code was released under an own non-commercial license.[398] As result, the game's community took over the support of the game and improved the game, fixed the bugs and security holes with self-made patches.[399] |
| Treasures of a Slaver's Kingdom | 2007 | 2010 | Z-machine Text adventure game | Freeware | Freeware | Cumberland Games & Diversions | S. John Ross released the commercial Treasures of a Slaver's Kingdom, which won the XYZZY Award 2007 for the best NPC, in 2010 with Z-machine source code as freeware.[400] More source code of text adventure from the 1970s and 1980s are available at the archive.[401] |
| World Train Royale | 2009 | 2011 | Tycoon game | ? | Freeware | Versus Software | Sold around 2009 for 10 dollars,[402] the game source code was released on 26 June 2011 on SourceForge.[403][404] |
| Xargon | 1993 | 2008 | Platformer | own license[378] | Freeware (with additional restrictions) | Epic MegaGames | Game source released in 2008 by the programmer Allen Pilgrim.[405] A SDL port followed later by Malvineous.[406] |
Source-available games
Video games in this table are source-available, but are neither open-source software according to the OSI definition nor free software according to the Free Software Foundation. If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention. The assets are not provided for free.
| Title | First release | Source code release | Genre | Engine license | Content license | Original developer | Additional information |
|---|---|---|---|---|---|---|---|
| 3-D Ultra Pinball: Thrill Ride | 2000 | 2020 | Pinball | Proprietary | Proprietary | Left Field Productions | On May 13, 2020, Dave Ashley added the source code of the Game Boy Color port to his Game Boy Color development repository.[407] |
| Airline Tycoon | 1998 | 2015 | Simulation game | Proprietary[408] | Commercial | Spellbound Entertainment | On 24 March 2015 Airline Tycoon Deluxe was re-released on the digital distribution platform gog.com, including the source code.[409] |
| Alien 3 | 1992 | 2019 | Run and gun | Proprietary | Proprietary | Probe Software | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 version of the game to GitHub.[410] |
| Alien Breed 3D II: The Killing Grounds | 1996 | 1997 | FPS | ? | Proprietary | Team17 | In March 1997 Team17 made the source code of Alien Breed 3D and Alien Breed 3D II freely available on the cover CD of Amiga Format magazine issue 95.[411][412][413] |
| Alien vs Predator (Atari Jaguar game) | 1994 | 2008 | FPS | ? | Proprietary | Rebellion Developments | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Aliens versus Predator | 2000 | 2001[417] | FPS | Own non-commercial license[418] | Proprietary | Rebellion Developments | Source code released by Rebellion Developments 2001. An unofficial patch project for the PC version, based on the source code, was released and is still updated.[417] |
| Alpha Waves | 1990 | 2009 | early 3D exploration game with platform aspects | ? | ? | Christophe de Dinechin | Released in 1990 as one of the earliest 3D games[419] with full 6-axis degree of freedom. In 2009, author Christophe de Dinechin released the complete assembly and GFA BASIC source code of the Atari ST version.[420][421] There is also a started PC port in C++ on SourceForge by the original author.[422][423] |
| Altered Beast | 1989 | 2019 | Beat 'em up | Proprietary | Proprietary | Software Studios | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub.[410] |
| Anachronox | 2001 | 2001 (partly) | RPG | Proprietary | Proprietary | Ion Storm | Some bits of code distributed with the official editor. |
| Anodyne | 2013 | 2020 | Action-adventure | Anodyne License | Anodyne License | Analgesic Productions | On April 4, 2020, Melos Han-Tani from Analgesic Productions released the source code of Anodyne under a custom permissive license.[424][425] |
| Army Men III | 2013 | 2018 | Third person shooter | Non-commercial use | Freeware | Neotl Empire | Army Men III was released in early access in 2013 and under development until it's cancellation in 2016. Two years later, the unfinished game was release as open source on SourceForge in April 2018.[426] |
| Atomic Robo-Kid | 1990 | 2019 | Scrolling shooter | Proprietary | Proprietary | Activision | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub.[410] |
| Attack of the Mutant Camels | 1989 | 2012 | Scrolling shooters | ? | ? | Jeff Minter | In 2012 the assembly language source code of the Konix version of the game was released on GitHub.[427][428] |
| Aztaka | 2009 | 2011 | Action role-playing game | Proprietary | Citérémis | In 2011 Independent game developer Citérémis released a "Developer's Edition" of Aztaka for $9.99 which included also the source code of the game.[429][430] | |
| Balance of Power | 1985 | 2013 | Government simulation game | ? | ? | Chris Crawford | In August 2013 Chris Crawford released source code of several of his games from his career to the public,[431] fulfilling a GDC 2011 given promise.[432] Beside Balance of Power he released all the source code he could recover, for instance Trust & Betrayal: The Legacy of Siboot, Excalibur, Gossip, Eastern Front (1941), Scram and Legionnaire. |
| Batman Returns | 1993 | 2015 | sidescrolling Beat 'em up | for educational purposes | for educational purposes | ACME / Chris Shrigley | In March 2015 programmer Chris Shrigley, who worked on the Sega CD version, found the Batman Returns source code and released it for educational purposes to the public.[433] He released also the source code of Magician, Cliffhanger, Gargoyles and some other games from his working career.[434] |
| Beauty & The Beast: A Boardgame Adventure | 1999 | 2020 | Board | Proprietary | Proprietary | Left Field Productions | On May 13, 2020, Dave Ashley added the source code of the game to his Game Boy Color development repository.[435] |
| Blood II: The Chosen | 1998 | 1999 | FPS | Proprietary | Proprietary | Monolith Productions | SDK released 1999, including the game logic for modders.[436] The Lithtech engine was not included as source code. |
| Blue Max | 1983 | 2016 | Scrolling shooter | Proprietary | Proprietary | Bob Pollin | Assembly source code released in 2016 by the author Bob Pollin in the Atariage forum.[437] On the Atariage forum source code of many more games was released.[438][439][440] |
| Breakout 2000 | 1996 | 2008 | Action | Proprietary | Proprietary | MP Games | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Broken Sword: The Shadow of the Templars and II: The Smoking Mirror | 1996/1997 | 2003 | Point and click adventure | Proprietary | Proprietary | Revolution Software | The source code of the games was made available to ScummVM in 2003.[441] |
| Call to Power II | 2000 | 2003 | turn-based strategy game | Non-commercial own license[442] | Proprietary | Activision | Civilization clone. Source opened to the apolyton community to allow support with Community patches.[443] |
| Checkered Flag | 1994 | 2008 | Racing | Proprietary | Proprietary | Rebellion Developments | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Civilization IV | 2005 | 2006 (partly) | turn-based strategy | Proprietary | Proprietary | Firaxis Games / 2K Games | In April 2006 the developers released the source code of the core game mechanic to the public with a Software Development Kit.[444][445] Additionally to the released source code, as game data and rules are stored in XML files and most of the game is written in Python, much (but not all) of the game is "open" and easily customizable.[446] The game's community produced later many mods, total conversions and optimization patches for the game.[447] |
| Civilization V | 2010 | 2012 (partly) | turn-based strategy | Proprietary | Proprietary | Firaxis Games / 2K Games | In Fall 2012 the developers released the source code of the core game DLL.[448] The game's community produced later a community patch project.[449][450] |
| Club Drive | 1994 | 2008 | Racing | Proprietary | Proprietary | Atari Corporation | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Contract J.A.C.K. | 2003 | 2003 | FPS | Proprietary | Proprietary | Monolith Productions | Game code distributed with the official editor (www.mpgh.net). |
| Conquest: Frontier Wars | 2001 | 2013 | Space Real-time strategy | Proprietary | Proprietary | Fever Pitch Studios | On December 9, 2013, the source code was bundled with every copy of the game purchased on GOG.com.[451][452] |
| Cook, Serve, Delicious! | 2012 | 2016 | Business simulation game | Proprietary | Proprietary | Vertigo Gaming | Source code released in the Humble GameMaker Bundle on September 6, 2016.[453][454][455] |
| Crazee Rider | 1987 | 2019 | Racing | Proprietary | Proprietary | Superior Software | In November 2018 the source code of Crazee Rider in BBC Micro 6502 assembly language was released by Kevin Edwards, designer of the game.[456] In April of the following year the source code for the Acorn Electron version was also released.[457] |
| CryEngine 5 | 2002[458] | 2016 | FPS | ? | NA | Crytek | In 2016 Crytek released their engine as pay-what-you-want including the source code to the public.[459][460] |
| Crysis | 2007 | ? | FPS | Proprietary | Proprietary | Crytek | Game code was officially released with the SDK. |
| Crysis 2 | 2011 | ? | FPS | Proprietary | Proprietary | Crytek | Game code was officially released with the SDK. |
| Cybermorph | 1993 | 2008 | Shooter | Proprietary | Proprietary | Attention to Detail | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Daikatana | 2000 | 2015 | FPS | ? | Proprietary | Ion Storm / John Romero | Lacking any further official support after the closure of Ion Storm's Dallas office in 2001, John Romero gave the game's source code to community members, allowing them to develop additional platform ports and bug fixes.[461][462] |
| Dandy | 1983 | 2018 | Dungeon crawl | ? | ? | John Howard Palevich | In March 2018 the source code for the Atari 8-bit version was released by Kevin Savetz with permission of Palevich.[463] |
| DarkSpace | 2001 | 2009 | MMO, Real-time strategy | multiple, self-written licenses.[464] | Proprietary | Palestar | DarkSpace's game engine called Medusa released by Palestar under multiple licenses.[465] |
| Death and Taxes | 2020 | 2020 | Simulation game | Proprietary/MIT (engine[466]/game code) | Proprietary | Placeholder Gameworks | After selling well the indie game's Unity source code was released on GitHub[467] to help other developers.[468][469] |
| Death Ray Manta | 2012 | 2015 | Arena shooter | Proprietary | educational purposes | Bagfull of Wrong / Rob Fearon | The GameMaker Studio based game's source code was released in 2015 with a Humble Indie Bundle.[470] The assets followed in 2016.[471] |
| Descent, Descent II | 1995/1996 | 1997/1999 | space 3D FPS | own license[472] | Proprietary | Parallax Software | Game source released by Parallax Software in 1997 (Descent 1)[473] and 1999 (Descent 2).[474] Descent 3 source code seems to be in hands of Rebecca Heineman and were considered 2014 for a release.[475] |
| Deus Ex (video game) | 2000 | ? | FPS | Proprietary | Proprietary | Ion Storm | Headers and some code distributed with the official SDK. |
| Discworld and Discworld II | 1995 | 2008 | point-and-click adventure game | Proprietary | Proprietary | Teeny Weeny Games | First announced for release around 2005 by Terry Pratchett,[476] source code became in 2008 available to the ScummVM developers.[477] The code was fast integrated into ScummVM.[478] |
| Disney's Aladdin | 1993 | 2017 | Platformer | Proprietary | Proprietary | Disney | Around 2017 the source code of the game became available to "The Video game history foundation", which wrote a review of the technique of the game based on the code.[479] |
| Dog Daze | 1981 | 2014 | Arcade game | Proprietary | Proprietary | Gray Chang | In 2014 Gray Chang released the source code of his Atari 400/800 games Dog Daze, Dog Daze Deluxe, Bumpomov's Dogs, and Claim Jumper.[480] Available at the Internet Archive. |
| Doom (Jaguar) | 1994 | 2003 | FPS | Proprietary | Proprietary | Id Software | On April 27, 2003, the source code of the Atari Jaguar port of the game was released by Albert Yarusso of AtariAge with permission of John Carmack.[481] |
| Duke Nukem 3D | 1996 | 2003 | FPS | Build license/GPLv2 (engine[482]/game code) | Proprietary | 3D Realms / Ken Silverman | Game source released on April 1, 2003.[483] Update builds and source ports like eduke32 followed by the game's community.[484] |
| Dungeon Defenders | 2010 | 2011 | Tower defense | Proprietary | Proprietary | Trendy Entertainment | In November 2011 there was a "development kit" released as free DLC which included the game's source code.[485] |
| Elite | 1984 | 1999 | Space trading game | Proprietary | Freeware | Ian Bell, David Braben | In November 1999, developer Ian Bell released on the game's 15th birthday the BBC Micro assembly source code on his website.[486][487] Following that, Christian Pinder created a platform-neutral C version from the released BBC Micro version, called Elite: The new kind. In 1999–2000 a dispute occurred between Ian Bell and David Braben regarding Bell's decision to make available all versions of the original Elite.[488] The dispute has since ended and the various versions are now available again on Bell's site.[489][490] |
| Enemy Engaged: RAH-66 Comanche vs. KA-52 Hokum | 2000 | 2003 | Helicopter Flight simulator | own license[491] | Proprietary | Razorworks | Game source was released somewhen 2003 by Razorworks.[492] |
| Far Cry (video game) | 2004 | ? | FPS | Proprietary | Proprietary | Crytek | Game code was officially released with the SDK. |
| F.E.A.R. | 2005 | ? | FPS | Proprietary | Proprietary | Monolith Productions | Headers and some code distributed with the official SDK. |
| The Feeble Files | 1997 | 2005 | Adventure | Proprietary | Proprietary | Adventure Soft | The source code of the games was made available to ScummVM in 2005.[493] |
| Fight for Life | 1996 | 2008 | Fighting | Proprietary | Proprietary | Atari Corporation | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Flight of the Amazon Queen | 1995 | 2003 | Adventure | Proprietary | Proprietary | Interactive Binary Illusions | The source code of the games was made available to ScummVM in 2004.[493] |
| Freedom Force | 2002 | 2002 (partly) | FPS | Proprietary | Proprietary | Irrational Games | Game logic written in Python. Scripts are located in the game directory. |
| FreeSpace 2 (now FreeSpace 2 Source Code Project) | 1999 | 2002 | Space Sim | Non-commercial/Proprietary | Proprietary | Volition | Game source released by Volition on April 25, 2002.[494] |
| Galaforce | 1986 | 2019 | Shoot 'em up | Proprietary | Proprietary | Superior Software | In March 2019 the source code of Galaforce in BBC Micro 6502 assembly language was released by Kevin Edwards, designer of the game.[495] In April of the same year Edwards released the source code for the Acorn Electron version.[496] |
| Gothic 3 | 2006 | 2007 | RPG | Proprietary | Proprietary | JoWood | Source code was opened by JoWood for the members of "Community patch project" from the game community in 2007.[497] |
| Grand Monster Slam | 1989 | 2017 | Fantasy sports game | ? | Proprietary | Rolf Lakaemper, Hartwig Niedergassel | In March 2017 the source code of the game became available via the Internet Archive.[498] |
| Hack 'n' Slash | 2014 | 2014 | Zelda-like puzzle game | ? | Proprietary | Double Fine | With the 1.0 release on September 9, 2014 also the source code of the game was released by Double Fine.[499][500] |
| Hacker Evolution: Source code | 2007 | 2015 | Hacker game | ? | Proprietary | Exosyphen | Released on May 11, 2015 for $49.95 by the indie game developer.[501] |
| Heartlight | 1990 | 2005 | Action-adventure | ? | ? | X LanD Computer Games / Janusz Pelc | The 8-bit Atari source code became available around 2005.[502] Other games like Robbo became available too. |
| Heavy Metal: F.A.K.K. 2 | 2000 | 2001 | Action-adventure | Proprietary | Proprietary | Ritual Entertainment | Game code distributed with the official editing tools / SDK. |
| Heretic II | 1998 | 1998 | Action-adventure | Proprietary | Proprietary | Raven Software | Game code distributed with the official editing tools. |
| Highlander: The Last of the MacLeods | 1995 | 2008 | Action-adventure | Proprietary | Proprietary | Lore Design Limited | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Homeworld | 1999 | 2003 | Space Real-time strategy | Non-commercial license[503] | Proprietary | Relic Entertainment | Game source released 2003.[504] The source code became the base of several source ports to alternative platforms, like Mac,[505] Linux, Pandora,[506] Maemo/N900,[507] or Android[508][509] using the Simple DirectMedia Layer (SDL) cross-platform multimedia library. As the source code's license requirements limits further development significantly[510] the game's community aims for a re-licensing with the new IP holder Gearbox.[511] In September 2013 Gearbox responded positively to the idea for a re-licensing of the already published source code, noting their efforts in supporting the modding community.[512] |
| Hover Strike | 1995 | 2017 | Shooter | Proprietary | Proprietary | Atari Corporation | Made freely available on a Jaguar-dedicated Facebook group in May 2017.[513] |
| Hover Strike: Unconquered Lands | 1995 | 2008 | Shooter | Proprietary | Proprietary | Atari Corporation | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Hundreds | 2010 | 2010 | Puzzle game | ? | ? | Greg Wohlwend / Semi Secret | Greg Wohlwend chose to open source his code in 2010,[514] partly with the intent to spur "non-coders" to try coding, as he had.[515][516] Programmer Eric Johnson of Semi Secret found the open source version and ported the game to iPad in a weekend before notifying Wohlwend,[515] which was later released commercially in an updated version. |
| I-War (Atari Jaguar game) | 1995 | 2008 | Shooter | Proprietary | Proprietary | Imagitec Design | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Inherit the Earth | 1994 | 2005 | Point and click adventure | Proprietary | Proprietary | The Dreamers Guild | In 2005, Wyrmkeep Entertainment gave the source code for the game to the ScummVM Team for its inclusion in ScummVM.[517][518] |
| Jim Power in Mutant Planet | 1992 | 2017 | Platform game | ? | ? | Digital Concept | Around 2017 the source code of Jim Power was rescued by Piko Interactive.[519] |
| Ken's Labyrinth | 1993 | 2001 | FPS | Non-commercial license | Freeware | Ken Silverman | Ken's Labyrinth was released as freeware on November 16, 1999. The source code under a non-commercial license followed on July 1, 2001.[520] A port to modern operating systems such as Windows and Linux using Simple DirectMedia Layer called LAB3D/SDL was created by Jan Lönnberg and released in 2002.[521] A version of the port which includes new higher resolution textures was also created by Jared Stafford.[522] |
| Kingpin: Life of Crime | 1999 | ? | FPS | Proprietary | Proprietary | Xatrix Entertainment | Game code distributed with the official SDK. |
| The Labyrinth of Time | 1993 | 2016 | Adventure | Proprietary | Proprietary | Terra Nova Development | The source code of the games was made available to ScummVM in 2016.[523][518] |
| Larva Mortus | 2008 | 2009 | Top-down shooter | MIT/Non-commercial (engine/game code[524]) | Proprietary | Rake In Grass | Czech independent video game developer Pavel Tovarys released the Torque 2D v1.1.3 based source code in 2009 under non-commercial conditions.[525][526] Several other games' source code were released too.[527] The code was taken offline after several games' IP were sold to another company. The source code is currently in no known repository on the web available. |
| The Little Mermaid II: Pinball Frenzy | 2000 | 2020 | Pinball | Proprietary | Proprietary | Left Field Productions | On May 11, 2020, Dave Ashley released the source code of the game on GitHub, along with a Game Boy Color emulator.[528] |
| The Lost Files of Sherlock Holmes: The Case of the Serrated Scalpel and The Case of the Rose Tattoo | 1992 | 2015 | Adventure | Proprietary | Proprietary | Mythos Software | On 2015 Electronic Arts gave source code for both games to the ScummVM Team for their inclusion in ScummVM.[529] |
| MechCommander 2 | 2001 | 2006 | Real-time tactics | Shared Source Limited Permissive License[530] | Proprietary | FASA Interactive/Microsoft | Source opened under a Shared Source license by Microsoft in August 2006.[531][532] As of 2017 there is a project fork on GitHub with the goal to port the source code to Linux.[533] |
| Miner Wars 2081 | 2012 | 2013 | 6DOF Space Shooter game | own proprietary license[534] | Proprietary | Keen Software House | 6DOF action-survival space-shooter simulation-game set in the year 2081. Full game and engine source code released under a restrictive license. |
| MiG Alley | 1999 | 2001 | Flight simulation | Proprietary | Proprietary | Rowan Software/Empire Interactive | Source opened by Rowan Software/Empire Interactive in 2001.[535][536] |
| Mr. Do! (for Gameboy) | 1992 | 2007 | Arcade | Proprietary | Proprietary | Universal Entertainment Corporation | Source opened of the game boy version by developer Wesley Knackers in 2007 on his website.[537][538] |
| Myth (series) | 1998 | 2001 | Real-time tactics | Proprietary | Proprietary | Take 2 Interactive/MumboJumbo | Source opened by Take 2 Interactive/MumboJumbo to the game community in 2001.[539][540] |
| Nanosaur | 1998 | 2003 | FPS | Proprietary | Proprietary | Pangea Software | Around 2003 the Nanosaur source code was made available by the developer under a restrictive license.[541] |
| Nemesis the Warlock | 1987 | 2019 | Action game | Proprietary | Proprietary | Creative Reality | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 version of the game to GitHub.[410] |
| Pariah | 2005 | 2005 (partly) | FPS | Proprietary | Proprietary | Digital Extremes | Game code available on GitHub.[542] |
| Pirate Adventure | 1978 | 1980 | adventure game | ? | ? | Scott Adams (game designer) | The source code for Pirate Adventure was printed in the December 1980 issue of BYTE, with an addendum in April 1981.[543][544] This enabled others to discover how the engine worked and to create their own adventures using this or a similar design. |
| Postal 2 | 2003 | 2003 (partly?) | FPS | Proprietary | Proprietary | Running with Scissors | Some game code and tools distributed with the official game release. |
| Preppie! | 1982 | 2016 | action game | ? | ? | Russ Wetmore / Star Systems Software | In January 2016 Russ Wetmore released the source code of his Atari 8-bit family games Preppie!, Preppie II and Sea Dragon to the public on the Internet Archive.[545] |
| Prince of Persia | 1989 | 2012 | Cinematic platformer | Proprietary | Proprietary | Jordan Mechner | Apple II source code was long-thought-lost,[546] but was found again and released in 2012.[547] A port of the assembly source code to C and SDL as backend was made by a community programmer.[548] |
| Rampage | 1988 | 2019 | Action game | Proprietary | Proprietary | Software Studios, Catalyst Coders | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub.[410] |
| Rowan's Battle of Britain | 2000 | 2001 | Flight simulation | Empire Interactive License | Proprietary | Rowan Software/Empire Interactive | Source opened by Rowan Software/Empire Interactive in 2001.[535][549] |
| Rune | 1999 | 2000 | FPS | Proprietary | Proprietary | Human Head Studios | Headers and some code distributed with the official SDK. |
| Savant - Ascent | 2013 | 2015 | Action | Proprietary | Proprietary | D-Pad Studio | Source code released in the Humble Weekly Bundle: Play and Create with GameMaker on September 17, 2015.[550][551] |
| Sea Dogs: An Epic Adventure at Sea | 2000 | 2009 | pirate game | Proprietary | Proprietary | Akella | In 2009 Akella agreed to hand the source code of Sea Dogs' game engine to the game community on end-of-support.[552] |
| Severance: Blade of Darkness | 2001 | 2001 (partly) | FPS | Proprietary | Proprietary | Rebel Act Studios | Game logic written in Python. Scripts are located in the game directory. |
| Shadowgun: Deadzone | 2011 | 2015 | Shoot 'em up | SHADOWGUN: DEADZONE PUBLIC LICENSE AGREEMENT[553] | Proprietary | Madfinger Games | Game source and assets of the Unity 3.5 game were released some years after release.[554] |
| Shadowgrounds | 2005 | 2011 | Shoot 'em up | own non-commercial license[555] | Proprietary | Frozenbyte | Game source released with a Humble Indie Bundle by Frozenbyte on April 22, 2011.[556] |
| Shadow Warrior | 1997 | 2005 | FPS | Build license/GPLv2 (engine[482]/game code) | Proprietary | 3D Realms | Game source released on April 1, 2005.[557] |
| Silent Hunter II | 2001 | 2002 | submarine simulation | ? | Proprietary | Ubisoft | Around 2002 Ubisoft had ended the official support while still significant issues existed. Therefore, Ubisoft enabled the game's community at Subsim.com to fix the game themselves by giving them the source code.[558] The fans raised $7000 for an unofficial patch development project which fixed most of the issues.[558] The community extended Silent Hunter II also content wise significantly with expansion packs or texture upgrades.[559][560] |
| Sin & SiN: Wages of Sin | 1998 | 1998 | FPS | Proprietary | Proprietary | Ritual Entertainment | Game code was officially released. |
| Sláine | 1987 | 2019 | Adventure | Proprietary | Proprietary | Creative Reality | On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 version of the game to GitHub.[410] |
| Soliter | 1994 | 2009[561] | Puzzle game | Proprietary | Freeware | Oldsoft | Zdnek Stary developed at the Czech development studio Oldsoft the solitair game Soliter for the ZX Spectrum which got released in 1994. The game was released by the author in 2005 on his homepage for download, in 2009 the assembly source code followed as scan.[562] |
| Soldier of Fortune | 2000 | ? | FPS | Proprietary | Proprietary | Raven Software | Game code distributed with the official SDK. |
| Soldier of Fortune II: Double Helix | 2002 | ? | FPS | Proprietary | Proprietary | Raven Software | Game code distributed with the official SDK. |
| Solstice | 2016 | 2016 | Visual novel | Proprietary | Proprietary | MoaCube | Source code released in the Humble GameMaker Bundle on September 6, 2016.[453][454][455] |
| Space Engineers | 2013 | 2015 | space sandbox game | Proprietary | Proprietary | Keen Software House | On May 14, 2015 the development studio made the source code freely available to the game's community for easier modding on GitHub under a proprietary license (non-open source license).[563][564][565] |
| Spacewar! | 1962 | 2003 (?) | Space combat | ? | ? | Steve Russell | Source code became available around the 2003.[566] |
| Star Fire | 1980 | 2020 | Arcade | Proprietary | Proprietary | Exidy | On August 21, 2020, The History of How We Play uploaded to the Internet Archive the source code for Star Fire provided by David Rolfe, co-designer of the game.[567] |
| Star Raiders | 1979 | 2015 | space combat simulator | Proprietary | Proprietary | Aric Wilmunder / Atari | The commented assembly source code scan of Star Raider became available in October 2015 in the Internet Archive as scan.[568] Aric Wilmunder opened it up with several other artifacts of his gaming career (e.g. SCUMM).[569] The community typed in the source code double checked in a GitHub project.[570] Shortly before a reverse engineering project was finished, too.[571] A true sequel, also called Star Raiders II, had been under development for some time by Aric Wilmunder. The never released prototype source code was posted publicly in December 2015.[572] |
| Star Trek: Voyager – Elite Force | 2000 | 2000 | FPS | Proprietary | Proprietary | Raven Software | Game code distributed with the official GDK. |
| Star Trek: Elite Force II | 2002 | 2003 | FPS | Proprietary | Proprietary | Ritual Entertainment | In November 2003 Ritual Entertainment released the source code of their server-side code base for multiplayer gaming under a non-commercial license.[573][574] |
| Stealth Bastard Deluxe | 2012 | 2015 | Stealth | Proprietary | Proprietary | Curve Digital | Source code released in the Humble Weekly Bundle: Play and Create with GameMaker on September 17, 2015.[550][551] |
| Taxman | 1981 | 202? | pacman clone | ? | ? | H.A.L. Labs / Brian Fitzgerald | Apple II pacman clone from 1981. In August 2015 Rebecca Heineman announced that original developer Brian Fitzgerald allowed to release the source code.[575][576] GitHub repository is still empty as of July 2020.[577] |
| Tempest 2000 (Atari Jaguar) | 1994 | 2008 | Tube shooter | ? | Proprietary | Llamasoft | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Terminal Velocity | 1995 | 2015 | flight game | ? | ? | Mark Randel / Terminal Reality | Became available under a NDA in June 2015.[578] Work on an updated version for modern system started immediately.[579] |
| The Clue! | 1994 | 2000 | role-playing adventure game | own license | own license / Freeware | Neo Software | In 2000 the source code was released to the public.[580][581] The game is since then ported to modern platforms via SDL and receives still updates by the community (2015).[582] |
| The Guild of Thieves | 1987 | 2017 | adventure game | ? | ? | Magnetic Scrolls | In June 2017 Magnetic Scrolls worked on recovering the source code of their classics from tapes to remaster and re-release them.[583][584] |
| The Wizard's Castle | 1980 | 2004 | role-playing adventure game | ? | ? | Joseph R. Power | The BASIC source code of the 1980 developed game was published by the developer in the July/August 1980 issue of Recreational Computing.[585][586] Ports to other systems followed afterwards.[587] |
| The Wheel of Time | 1999 | 1999 | FPS | Proprietary | Proprietary | Legend Entertainment | Game code and tools distributed with the official game release. |
| Tilt Brush | 2016 | 2021 | Room scale | Proprietary/Apache-2.0 (engine[466]/game code) | Proprietary | The Unity 2018.4.11f1 source code was uploaded to GitHub on January 26, 2021.[588] | |
| Tony Tough and the Night of Roasted Moths | 2002 | 2012 | Point and click adventure | Proprietary | Proprietary | Nayma Software | In 2012, DotEmu and Nayma Software gave the source code for this game to the ScummVM Team for its inclusion in ScummVM.[589][518] |
| Tornado | 1993 | 2017 | combat flight simulator | ? | Proprietary | Digital Integration / Interplay Entertainment | In March 2016 in the Tornado's community forum, rumors surfaced that Interplay Entertainment was working on a re-release of the game for digital distribution, based on the original source code.[590] The assembly source code finally surfaced in January 2017 on github.com.[591][592] |
| Trevor McFur in the Crescent Galaxy | 1993 | 2008 | Shoot 'em up | ? | Proprietary | Flare II | Released by defunct Jaguar Sector II website under a CD compilation for PC titled Jaguar Source Code Collection on August 24, 2008.[414][415] Source code was provided by Atari historian Curt Vendel.[416] |
| Tron 2.0 | 2003 | 2009 | FPS | ? | ? | Monolith Productions | Source code released with Lithtech Jupiter Enterprise b69 engine. |
| Ultima: Escape from Mt. Drash | 1983 | 2003 | Role-playing video game | Proprietary | Proprietary | Keith Zabalaoui / Sierra On-Line | On 11 June 2003, the game was ported to PC (under GPLv2 license) by Kasper Fauerby based on the original BASIC source code and some smaller binary reverse engineered parts.[593] |
| Unreal | 1998 | 2008 | FPS | source opened to the community under NDA | Proprietary | Epic MegaGames | Headers and some code distributed with the official SDK. Also, some pre-release version (v0.87) is available on the internet. Around 2008 access to source-code was granted by Epic MegaGames for the game community.[594] In 2015 Tim Sweeney announced that he hope to be able to open source one day the engine to the public.[595] |
| Unreal Tournament 99 | 1999 | ? | FPS | Proprietary | Proprietary | Epic Games, Digital Extremes, Legend Entertainment | Headers and some code distributed with the official SDK. |
| Unreal Tournament 2003 | 2002 | ? | FPS | Proprietary | Proprietary | Epic Games | Game code was officially released. |
| Unreal Tournament 2004 | 2004 | ? | FPS | Proprietary | Proprietary | Epic Games | Game code was officially released. |
| Unreal Tournament 3 | 2007 | ? | FPS | Proprietary | Proprietary | Epic Games | Game code was officially released. |
| Uplink | 2001 | 2003 | Hacking simulation | Proprietary | Proprietary | Introversion Software | Mid-2003 Introversion Software started selling the source code for $45. Usage beside modding and fixing of the game are not permitted by the license.[596] Source code of the games Darwinia + Multiwinia and DEFCON was later sold too.[597] |
| Unreal II: The Awakening | 2003 | ? | FPS | Proprietary | Proprietary | Legend Entertainment | Game code and tools distributed with the official game release. |
| Video Checkers | 1980 | 2020 | Board | Proprietary | Proprietary | Atari, Inc. | On April 8, 2020, Kay Savetz uploaded scans of the complete source code of the revision A of Video Checkers (a first-party video game for the Atari 2600) to the Internet Archive donated by its developer Carol Shaw.[598] |
| VVVVVV | 2010 | 2020 | platformer | source available | Proprietary | Terry Cavanagh | On the 10th anniversary of the game's release in January 2020, Kavanagh released the source code[599] for VVVVVV under a non-open source "VVVVVV Source Code License v1.0"[600] via GitHub.[601] |
| Warlords Battlecry III | 2004 | 2006 | RTS | Own proprietary license | Proprietary | Infinite Interactive/Enlight Software | On 24 May 2006, the Warlords Battlecry III source code became available to the public. Members of the community (who signed a NDA) have been entitled distributors, which have the legal permissions to allocate copies of the Warlords Battlecry III source code.[602][603] The source code release resulted in the development of several community-made fan patches[604][605] and mods. |
| War Worlds | 2013 | 2014 | RTS | Own permissive license[606] | Own permissive license | Codeka / Dean Harding | The mobile strategy game was originally released commercially,[607] and later released to the public to allow the community to continue the support of the game.[608][609] With help of the community the game's main developer has continued the support since then. |
| Witchaven series | 1995 | 2006 | FPS | non-given | Proprietary | Capstone Software | Around 2006 Les Bird, a programmer from the 1996 folded game development company Capstone Software, released the source code of the abandoned games Witchaven, Witchaven II, William Shatner's TekWar and Corridor 7: Alien Invasion.[610] |
| Worms Armageddon | 1999 | 2002 | Deathmatch game | ? | Commercial | Team17 | Around 2002 Team17, impressed by the reverse engineering on Worms Armageddon for "Silkworm",[611] gave David "Deadcode" Ellsworth access to the source code.[612] Over the next years he created unofficial patches, until he joined Team17 in 2006. Updates are still created as of 2015.[613] |
| Xenonauts | 2014 | 2015 | Turn-based tactics | ? | Proprietary | Goldhawk Interactive | Shortly after the release of the stable version Goldhawk Interactive allowed selected members of the community to access the source code.[614] This resulted in the community edition of the game (Xenonauts:Community Edition, X:CE), which continues development of an independent branch of the game, adding new features and bugfixes.[615] |
| XIII | 2003 | 2018 (partly) | FPS | Proprietary | Proprietary | Ubisoft Paris | The UnrealScript source code of the game was made available on GitHub in January 2018.[616] |
See also
- Category:Commercial video games with freely available source code.
- List of open-source game engines
- List of commercial video games with available source code
- List of open-source video games
- List of formerly proprietary software
- List of commercial video games released as freeware
- List of freeware games
- List of proprietary source-available software
- Source port
- Source-available software
References
- "Purchasing Abuse". Archived from the original on 2003-06-10. Retrieved 2007-09-07.
- Abuse 1996 - 20th anniversary source port Archived 2016-07-21 at the Wayback Machine on gog.com "Abuse SDL 0.9a:- Enabled custom resolutions and enabled lights on high resolutions - Re-enabled OpenGL rendering to enable vsync [...]- Added cheats via chat console: bullettime, god, giveall, flypower, sneakypower, fastpower, healthpower, nopower - XBox360 controller support with rebindable buttons"
- Abuse_1996 Archived 2016-06-13 at the Wayback Machine on github.com/antrad
- Herro, Mark (October 1980). "The Electric Eye" (PDF). The Dragon (42): 42–43 hardcopy (aka electronic pagenumbers 44–45 in archived PDF version). Archived (PDF) from the original on 2015-07-14. Retrieved 2015-07-11.
- Adams, Scott (July 1980). "Adventureland". SoftSide. p. 36. Archived from the original on 28 March 2016. Retrieved 13 April 2015.
- Graham, Nelson (2001). The Inform Designer's Manual (PDF). Dan Sanderson. p. 358. ISBN 0-9713119-0-0. Archived (PDF) from the original on 2015-11-07.
- AlienBash_src.readme Archived 2016-03-04 at the Wayback Machine This code is available under the following license, as stated by Mr. Glen Cumming in the above thread: "I am happy for every scrap of code on my disks to be made available to whoever wants it - I only ask that the really embarrassing stuff is erased (lots) and any potentially libelous messages (or swears) in any of the code/scrolling messages are removed."
- AlienBash I & II - Original Coder Contacted - Help Needed in Rescuing 68000 Source!! Archived 2016-03-06 at the Wayback Machine on eab.abime.net (2014)
- Kurinnoy, Michael (2007-02-20). "AstroMenace Press Release" (PDF). Viewizard. Archived from the original (PDF) on 2011-07-17. Retrieved 2010-03-08.
- Memonix game Source on viewizard.com (2007-10-12)
- Siegler, Joe (20 March 2009). "Several old games released as Freeware". 3D Realms. Archived from the original on 23 March 2009. Retrieved 1 May 2020.
- Blades of Exile Source Code Archived 2014-09-05 at the Wayback Machine on spiderwebsoftware.com
- Source Code "The complete source code of the following Clonk versions is available: Clonk Rage (current version) (engine, tools, and editor, VC6/VC7/VC9/MinGW/gcc/xcode) Clonk Endeavour 4.95.5 (engine only, VC6 or MinGW) Clonk Planet 4.65 (engine only, VC6) Clonk 3 Radikal (MS-DOS, Borland Turbo C++) Clonk 2 Debakel (MS-DOS, Borland Turbo C++) Clonk 1 (MS-DOS, Borland Turbo C++ [...] Clonk Source Code License (ISC License) Copyright (c) 2001-2014, RedWolf Design GmbH, http://www.clonk.de Archived 2006-01-14 at the Wayback Machine"
- Developer "Clonk Game Content License Clonk game content is available under the following license. This applies to graphics, audio data, scripting, and text found in the game release packages (usually packed inside c4f, c4g, and c4d group files). Creative Commons Attribution-NonCommercial (CC BY-NC)"
- (in Polish) Announcement on Polish fan community page Archived 2012-08-07 at the Wayback Machine
- Jerz, Dennis (2007). "Somewhere Nearby is Colossal Cave: Examining Will Crowther's Original "Adventure" in Code and in Kentucky". Digital Humanities Quarterly. Seton Hill University. Archived from the original on 2016-06-16.
- David Kinder's guide to Adventure downloads Archived 2014-08-12 at the Wayback Machine at the Interactive Fiction Archive
- Colossal Cave Adventure Source Code Archived 2015-06-06 at the Wayback Machine on jerz.setonhill.edu (2007)
- adv350-pdp10.tar.gz Archived 2016-06-23 at the Wayback Machine on ifarchive.org (2000)
- ‘Colossal Cave Adventure’ is due for an update. Archived 2017-05-29 at the Wayback Machine by Jordan Pearson on vice.com (May 29, 2017)
- open-adventure Archived 2017-05-30 at the Wayback Machine on GitLab
- The Adventure begins again Archived 2017-05-31 at the Wayback Machine by Eric Raymond (2017-05-22)
- cylindrix on hardgeus.com (archived)
- Cylindrix Archived 2016-07-21 at the Wayback Machine on github.com
- "Citadel for Amiga (1995) MobyRank". MobyGames. Archived from the original on 2020-03-04. Retrieved 2020-03-04.
- the citadel source code Archived 2016-07-21 at the Wayback Machine (October 2007)
- Cytadela - need help in porting to AmigaOS Archived 2016-07-21 at the Wayback Machine on amigaworld.net (31-Jan-2007)
- Cytadela project - a conversion of an Amiga first person shooter Archived 2016-06-23 at the Wayback Machine on cytadela.sourceforge.net
- Dragonfire source Archived 2013-03-16 at the Wayback Machine on atariage.com
- Dragonfire Source Code Archived 2016-03-07 at the Wayback Machine at atariage.com "Really, it was Bob that wanted his source in the public domain." (2003)
- [stella] Source code for Dragonfire from Bob Smith Archived 2016-07-21 at the Wayback Machine on biglist.com
- minidig Archived 2016-11-12 at the Wayback Machine on qotile.net
- Eat The Whistle goes GPL! on hurricane-studios.ath.cx (archived)
- Escape Towards The Unknown GPL Archived 2015-09-10 at the Wayback Machine on sourceforge.net
- Eat the Whistle Archived 2013-09-02 at the Wayback Machine on ggsoft.org
- glad (archived)
- openglad Archived 2016-03-19 at the Wayback Machine on sourceforge.net
- tinyspeck (2013-11-18). "Glitch is Dead, Long Live Glitch! - Art & Code from the Game Released into Public Domain". glitchthegame.com. Archived from the original on 2013-12-13. Retrieved 2013-12-11.
The entire library of art assets from the game, has been made freely available, dedicated to the public domain. Code from the game client is included to help developers work with the assets. All of it can be downloaded and used by anyone, for any purpose.
- Blackwell, Laura (2013-11-18). "Afterlife of an MMO: Glitch's offbeat art enters public domain". pcworld.com. Archived from the original on 2013-12-09. Retrieved 2013-12-11.
- Kloodge (27 March 2020). "Source Code Released". Steam Community. Valve. Archived from the original on 30 March 2020. Retrieved 30 March 2020.
- Jens Andersson; Jan Kronqvist (2008-09-21). "The Gravity-Force 2 Homepage". lysator.liu.se. Archived from the original on 2013-10-15. Retrieved 2013-10-13.
Jan made an archaeological expedition and recovered the GF2 source code from a dusty old floppy disc! We do not pretend it is a wonder in coding style (in fact, it is a complete disaster!), but for primarily nostalgic interest we publish it here.
- gf2 Archived 2013-10-15 at the Wayback Machine on lysator.liu.se "The screenshots, the GF2 source code, and the actual Amiga game (v1.10, v1.20) are released for use under the CreativeCommons CC-BY-SA license." (April 26, 2017)
- "Bringing Habitat Back to Life". pastemagazine.com. Archived from the original on 2016-03-02. Retrieved 2016-02-22.
- "The Habitat Hackathon". The Museum of Art and Digital Entertainment. Archived from the original on 21 July 2016. Retrieved 6 June 2016.
- Francis, Bryant (2016-07-06). "Source code for Lucasfilm Games' '80s MMO Habitat released". Gamasutra. Archived from the original on 2016-07-08. Retrieved 2016-07-06.
- Lucasfilm Games' MMO 'Habitat' source code released Archived 2016-07-21 at the Wayback Machine by Brittany Vincent on Engadget.com (2016-07-07)
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- gameSource Archived 2016-07-21 at the Wayback Machine on sourceforge.net
- Inside a Star-Filled Sky (Public Domain For-Pay) + Video Review + Jason Rohrer on open source Archived 2015-09-05 at the Wayback Machine on freegamer.blogspot.de (March 2011)
- GameKaiserZwo on strotmann.de (2003)
- Kaiser II unter GNU Public License on abbuc.de (03 April 2003)
- David H. Ahl (April 1982). "Six Business Management Games" (jpg). Creative Computing. Vol. 8 no. 4. pp. 28, 30. Archived from the original on 2016-09-16.
- lemonade-source.zip Archived 2016-03-07 at the Wayback Machine on strout.net
- Lemonade Stand Archived 2006-04-01 at the Wayback Machine on Codenautics "Lemonade Stand is both free and open-source"
- Lugaru goes open source Archived 2011-02-02 at the Wayback Machine Wolfire Blog, May 11, 2010
- Relicensing all Wolfire Lugaru assets to CC-BY-SA 3.0 on GitLab by David Rosen (November 21, 2016)
- osslugaru.gitlab.io Archived 2016-12-31 at the Wayback Machine
- Fully Open Source 3D Killer Rabbit | Lugaru HD 1.1 on freegamer.de (January 2017)
- "Archived copy". Archived from the original on 2011-07-16. Retrieved 2010-05-18.CS1 maint: archived copy as title (link)
- megaball Archived 2016-06-16 at the Wayback Machine on snappymaria.com (June 12, 2012)
- megaball Archived 2016-07-21 at the Wayback Machine on Bitbucket.org
- No Gravity (Classic) Archived 2013-03-24 at the Wayback Machine on sourceforge.net
- nothingtohide.cc (archived)
- Nothing to hide license on github.com
- Nothing To Hide Is A Very Smart Anti-Stealth Game Archived 2017-06-07 at the Wayback Machine by John Walker on Rock, Paper, Shotgun (on February 12, 2014)
- Demo + Crowdfunding: anti-stealth game Nothing To Hide takes its name literally Archived 2016-10-08 at the Wayback Machine by Anthony Swinnich on indiegames.com (February 16, 2014)
- Attention game designers: Public Domain Jam! on creativecommons.org by Matt Lee (May 16, 2014)
- pt2 (archived)
- paybacktime2 on github.com
- Budge, Bill [@BillB] (12 February 2013). "I just pushed the source for Pinball Construction Set to GitHub (thanks to Scott Cronce at EA)" (Tweet). Archived from the original on 11 August 2018. Retrieved 16 June 2016 – via Twitter.
- Budge, Bill. "billbudge/PCS_Atari800". GitHub. Archived from the original on July 25, 2013. Retrieved February 13, 2013.
- Budge, Bill. "PCS_AppleII". GitHub. Retrieved February 13, 2013.
- https://github.com/blupi-games/planetblupi
- Planet Blupi
- "blupi.org". blupi.org. 2018-06-02.
- RuneSword 2 FREE! on crosscutgames.com (2004-04-17)
- runesword 2 Archived 2015-09-06 at the Wayback Machine on sourceforge.net
- Wiesner, Thorsten (2004-04-19). "Rollenspiel RuneSword 2 ist ab sofort Open Source – Kompletter Source Code steht zum Download bereit" (in German). golem.de. Archived from the original on 2015-09-24. Retrieved 2015-08-04.
- 2.6.3 patch Archived 2017-06-12 at the Wayback Machine on sourceforge.net (2011)
- Free Ryzom campaign (archived)
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- "Breakthrough for Free Software Gaming--Ryzom Announces Full Release of Source Code and Artwork, and a Partnership with the Free Software Foundation to Host a Repository of the Game's Artistic Assets". ryzom.com. Archived from the original on 2010-05-09. Retrieved 2010-05-06.
- "Ryzom is opening a new website for its Free Software NeL 3D MMORPG engine". Ryzom. 2008-09-08. Archived from the original on 2009-02-17. Retrieved 2009-10-14.
- 7kfans.com/?p=96 Archived 2012-07-23 at the Wayback Machine
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- micropolis license Archived 2012-04-14 at the Wayback Machine on donhopkins.com
- Simser, Bil (2008-01-10). "SimCity Source Code Released to the Wild! Let the ports begin..." weblogs.asp.net/bsimser. Archived from the original on 2014-05-10. Retrieved 2012-12-30.
[...]Don Hopkins got a lot of work done on the finishing touches on releasing the original SimCity source code under the GNU General Public Library (GPL). The code won't have reference to any SimCity name as that has all be renamed to Micropolis. Micropolis was the original working title of the game and since EA requires that the GPL open source version not use the same name as SimCity (to protect their trademark) a little work had to be done to the code.
- sissyfight-2000-returns on kickstarter.com
- post on kickstarter.com
- sissyfight on github.com
- "Soldat 1.8 has been released as open source!". Steam. Valve Corporation. 25 May 2020. Retrieved 26 June 2020.
- Marcinkowski, Michael (26 May 2020). "Soldat source code released and a story of how it all started". Gamasutra. UBM Technology Group. Archived from the original on 15 June 2020. Retrieved 26 June 2020.
- Soldat asset license on github.com
- Clark, Dave (2000-10-29). "Sopwith Code Support". Retrieved 2006-12-01.
- Clark, Dave. "Sopwith – Source Code". Dave Clark's Home Page. Archived from the original on 2012-02-06. Retrieved 2006-12-01.
- Duane Blehm's Source Code on macintoshgarden.org "Source Code for Duane Blehm's games (Stunt Copter, ZeroGravity, Cairo Shootout), released into the public domain by his parents after his passing."
- 47-TEK ships Team 47 GoMan for 10 D3D chips from www.47-tek.com Archived 2011-01-22 at the Portuguese Web Archive on groups.google.com (November 1997)
- source (archived April 2009)
- 47-TEK gibt "Team 47: GoMan" Source Code frei Archived 2016-07-21 at the Wayback Machine by Christian Klass on golem.de (May 6, 1998)
- Looking for source code for Team 47 GoMAN Archived 2016-07-21 at the Wayback Machine on vogons.org (2012)
- Triplane Classic Archived 2015-12-24 at the Wayback Machine on sourceforge.net
- Triplane Classic - a side-scrolling dogfighting game Archived 2016-07-21 at the Wayback Machine on github.com
- Free game graphics: Tyrian ships and tiles Archived 2012-12-28 at the Wayback Machine Daniel Cook (2007-04-04)
- Lost garden license Archived 2012-12-28 at the Wayback Machine
- Civil War Strategy Game 2.10 RELEASED! on hutsellgames.com
- The source code for the classic Civil War Strategy Game by W.R. Hutsell. on github.com/davidshq/civilwarstrategygame
- voxel-quest Archived 2016-09-14 at the Wayback Machine on kickstarter.com (2014)
- First Release!!! Archived 2016-09-13 at the Wayback Machine on voxelquest.com (August 03, 2016)
- vqisosmall on github.com
- Wander (1974) — a lost mainframe game is found! Archived 2015-11-17 at the Wayback Machine on April 22, 2015
- Wander (1974) release, and questions answered Archived 2015-11-17 at the Wayback Machine
- Warfare Incorporated has been open sourced Archived 2016-05-14 at the Wayback Machine on warfareincorporated.com by Scott Lu (2014)
- hostile-takeover Archived 2016-07-21 at the Wayback Machine on github.com
- Warfare Incorporated now Open Source Hostile Takeover Archived 2016-05-09 at the Wayback Machine on pyra-handheld.com (2015)
- Updated GPL release readme Archived 2013-03-08 at the Wayback Machine by Jay Walker (eidos) (11 Jun 2008)
- The DUNGEON (Zork I) source Archived 2016-07-21 at the Wayback Machine on github.com/devshane/zork
- dungeon-3.2A.tar.Z (05-Oct-1994) Archived 2016-06-23 at the Wayback Machine on the Interactive Fiction Archive "Dungeon version 3.2A, 1-Oct-94; contains all the rooms and puzzles of the original MIT Zork. DEC FORTRAN source code by Robert M. Supnik; see dungn32b.zip for a port to DOS."
- itafroma/zork-mdl
- zork-source-code-is-a-master-class-in-game-developer-trolling
- allegiancelicense.txt Archived 2014-11-07 at the Wayback Machine Microsoft Research Shared Source license agreement ("MSR-SSLA")
- Colayco, Bob (2004-02-06). "Microsoft pledges Allegiance to its fanbase". gamespot.com. Archived from the original on 2013-12-10. Retrieved 2011-07-22.
- Horvitz, Eric (2017-07-28). "Allegiance Relicense Letter" (PDF). Director, Microsoft Research. Retrieved 2017-07-28.
Microsoft Corporation (“Microsoft”) hereby relicenses the Microsoft Video Game Allegiance source code found at https://github.com/FreeAllegiance/Allegiance/tree/master/src (“Allegiance Source Code”) from the current Microsoft Research Shared Source license Agreement (MSR-SSLA) to the MIT license.
- AmuletsArmor Archived 2017-05-23 at the Wayback Machine on github.com
- source code Archived 2017-02-11 at the Wayback Machine "Yep, legal issues are now resolved. We're moving forward." (February 2013)
- Questions regarding codebase Archived 2017-02-11 at the Wayback Machine (October 2016)
- AmuletsArmor on github.com/emrecelikten
- Ares Archived 2015-05-18 at the Wayback Machine on amrosiasw.com
- Antares Archived 2013-07-24 at the Wayback Machine on arescentral.org
- Munkki, Juri (2016-10-30). "Avara game, originally released in 1996 for Mac OS". Archived from the original on 2016-12-16. Retrieved 2016-10-30.
- sourceforge.net/projects/raceintospace Archived 2013-06-11 at the Wayback Machine
- CopyrightInfo.txt
- Petitte, Omri (20 March 2014). "Cart Life exits Steam, goes open source". PC Gamer. Archived from the original on 22 March 2014. Retrieved 21 March 2014.
- www.richardhofmeier.com on archive.is
- Die geheimen Projekte des Richard Hofmeier Archived 2016-07-21 at the Wayback Machine on indiegames.ch (May 2015)
- cartlife_src Archived 2016-07-21 at the Wayback Machine on github.com
- Corncob 3D and the Corncob Other Worlds Campaign on tidegear.net "Kevin Stokes has given his permission to do whatever we like with this!" (2016-01-03)
- Dink-Smallwood-Source-License Archived 2015-01-06 at the Wayback Machine
- Dink-Smallwood-Source-License Archived 2015-01-06 at the Wayback Machine Please keep in mind while I'm sharing the source, I am not sharing the media, if you would like to use or distribute the Dink Smallwood artwork, this requires express permission.
- "Archived copy". Archived from the original on 2015-01-06. Retrieved 2015-01-06.CS1 maint: archived copy as title (link)
- Find free sounds for FreeDink Archived 2016-07-21 at the Wayback Machine on gnu.org
- Dink Smallwood HD 1.89 released, made free on all platforms on codedojo.com
- DinkSmallwoodHD on github.com
- Brány Skeldalu (aka The Gates of Skeldal) is ready for testing Archived 2015-11-22 at the Wayback Machine on trisquel.info
- skeldal Archived 2016-07-21 at the Wayback Machine on sourceforge.net
- "Brány Skeldalu Download, English Patch (Beta) :: DJ OldGames". oldgames.sk. Archived from the original on 1 February 2014. Retrieved 18 January 2014.
- Nutt, Christian (12 February 2016). "Get a window into classic Mac dev with Glider source code". Gamasutra. UBM Technology Group. Archived from the original on 24 September 2016. Retrieved 17 August 2020.
Classic Mac game dev John Calhoun has released the source code for four of his games -- Glider, Glider Pro, Glypha III, and Pararena -- onto GitHub.
- Calhoun, John (2016-01-29). "Sources for the Macintosh game, Glider PRO, written by John Calhoun and published by Casady & Green Inc". GitHub. Archived from the original on 2016-03-21.
- Calhoun, John (2016-01-31). "Added legal section to read me. · softdorothy/glider_pro@49a35bb · GitHub". GitHub. Archived from the original on 2016-07-21. Retrieved 2016-03-16.
- GloomAmiga on GitHub - Source code of Gloom released in May 2017
- LICENSE "the license does not cover any other asset within the repository, which is only present for historical and archiving purposes."
- gunocide (2002, webarchive)
- vsgarage_deutsch
- software (2002)
- g2ex on sourceforge.net
- contact on irrgheist.com (archived)
- H-Craft Championship Purchase "In order to purchase H-Craft Championship please visit our reseller Manifestogames.com" (2007)
- H-Craft Championship Archived 2009-10-03 at the Wayback Machine CDnavigator.ru
- H-Craft Championship Archived 2015-08-30 at the Wayback Machine Freeware release announcement in Reddit
- H-Craft Championship Archived 2014-08-25 at the Wayback Machine Irrgheist News, February 25, 2015
- H-Craft Championship - H-Craft Source Code Archived 2015-03-02 at the Wayback Machine on irrgheist.com
- about on Mobrulesgames.com "content CC BY-NC-SA, code BSD" (archived 2013)
- haunts Archived 2017-02-09 at the Wayback Machine on kickstarter.com
- Troubled-Haunts-Kickstarter-Goes-Open-Source Archived 2017-03-05 at the Wayback Machine on the Escapist
- haunts on github.com/MobRulesGames
- haunts on github.com/losinggeneration
- Hypercycles Archived 2017-03-28 at the Wayback Machine on freegamedev.net
- hypercycles on github.com
- After 15 years, a cancelled Game Boy RPG finds life on PC Archived 2016-10-20 at the Wayback Machine on pcgamer.com by Steven Messner (August 16, 2016)
- infinity Archived 2016-08-29 at the Wayback Machine on github.com/infinity-gbc
- Infinity Released (August 13, 2016) Archived October 24, 2016, at the Wayback Machine on affinix.com "Today we are pleased to announce the release of Infinity for Game Boy Color in unfinished form! We've made a ROM file available, as well as the source code."
- Latest Patches Archived 2015-08-01 at the Wayback Machine on ironseed.com (March 24, 2013)
- wooga-veroeffentlicht-quellcode-von-html5-spiel-magic-land-island Archived 2017-02-05 at the Wayback Machine on browsergame-magazin.de (in German, 2012)
- Pocket Island Archived 2016-10-26 at the Wayback Machine on github.com
- "Marathon 2 Source Code Released". mactech.com. 2000-01-17. Archived from the original on 2014-08-20. Retrieved 2012-12-25.
Today at 7 pm CST Bungie Software releases the Mac source code for their classic game "Marathon 2: Durandal" to the net.
- Osborne, Eric (23 June 2011). "Burn Bright. Burn Blue". Bungie. Archived from the original on 26 June 2011. Retrieved 19 October 2020.
- Andrew Kirmse; Chris Kirmse (2012-09-15). "License for Meridian 59 v1.0". GitHub. Archived from the original on 2015-10-26. Retrieved 2013-10-08.
This source code is distributed under the terms of the GNU General Public License with the following special exception. As a special exception, the copyright holders of this program give you permission to link this program with the accompanying files wrap.dll and waveplay.dll.
- Pit Puzzle "free distribution" (archived)
- The-Puzzle-Pits Archived 2016-07-21 at the Wayback Machine on github.com
- Running With Scissors [@RWSbleeter] (17 August 2015). "We're going to release the POSTAL 1 source code soon, but only if someone promises to port it to the Dreamcast" (Tweet). Archived from the original on 14 April 2018. Retrieved 18 December 2016 – via Twitter.
- Running With Scissors [@RWSbleeter] (1 June 2016). "POSTAL 1 running on Open Pandora. P1 is being opened sourced in the near future!" (Tweet). Archived from the original on 4 June 2014. Retrieved 18 December 2016 – via Twitter.
- Postal Source Code Archived 2016-08-11 at the Wayback Machine by ptitseb "Things are progressing... Stay tuned." (2016)
- The Original POSTAL Has Been Made Open Source Archived 2016-12-29 at the Wayback Machine on runningwithscissors.com (December 28, 2016)
- license Archived 2016-12-29 at the Wayback Machine at bitbucket.org/gopostal/postal-1-open-source/src
- parallelrealities.co.uk/LICENSE LICENSE Archived 2016-07-21 at the Wayback Machine webarchive versions
- Debian bug #546800 - RM: starfighter -- RoM; copyright infringement Archived 2015-10-26 at the Wayback Machine on bugs.debian.org
- Wen, Howard (2005-08-11). "The Ur-Quan Masters". linuxdevcenter.com. O'Reilly Media. Archived from the original on 2016-01-19. Retrieved 2016-01-19.
When the original developers of Star Control 2 contacted the online Star Control fan community, they presented an enticing question: if they released the source to the 3DO version of Star Control 2 under GPL, would anybody be interested in porting it to modern-day computers? Michael Martin, a 26-year-old Ph.D. student at Stanford University, answered the call. After removing proprietary 3DO-specific components from the code, the developers released the source for Star Control 2 to the public.
- 1.0 release
- DeVries, Lucas (July 22, 2018). "Star Ruler 2 is now Open Source!". Official Star Ruler 2 discussion board on Steam. Archived from the original on July 24, 2018. Retrieved July 24, 2018.
- Chris Kerr (2018-07-24). "Blind Mind Studios releases source code for Star Ruler 2". Gamasutra.
- Rubin, Brian (2012-01-16). "Starshatter: The Gathering Storm Goes Open Source!". spacegamejunkie.com. Archived from the original on 2012-06-15. Retrieved 2013-01-08.
Apparently the excellent and unique military space sim, Starshatter: The Gathering Storm, has gone open source thanks to its original developer releasing the source code. [...]: "14 DEC, 2011 – STARSHATTER:THE GATHERING STORM – Open Source Version 5.0.5. This download Includes the cumulative Starshatter-TGS game up to version 5.0.5 (No CD Required). It is available for download from our “Lagacy Official File” section."
- doctorfrog (2012-02-06). "Because Stars Matter: Starshatter (Sci-Fi Flight Sim) is Free!". drfrog.wordpress.com. Archived from the original on 2012-01-27. Retrieved 2012-01-08.
Starshatter: The Gathering Storm is a moderately complex, moderately realistic, spaceborne military flight sim that takes place in a series of dynamic campaigns.
- source Archived 2016-07-21 at the Wayback Machine on digital-eel.com
- sais Archived 2012-12-26 at the Wayback Machine on infinitespacegames.com "After being sold for several years by Cheapass Games, Strange Adventures in Infinite Space was released as free software and its source code was made available under the GNU General Public License. Go to the Strange Adventures in Infinite Space website to download the game, source code and various other goodies"
- strange-adventures-in-infinite-space-free Archived 2016-06-04 at the Wayback Machine on Rock, Paper, Shotgun (2009-10-07)
- GitHub commit on kuroneko/sais (2020-05-18)
- Tread Marks 1.7.0 now free and open-source! Archived 2017-02-11 at the Wayback Machine by Rick on longbowgames.com (January 20, 2017)
- TreadMarks Archived 2017-05-23 at the Wayback Machine on github.com
- Treadmarks on github.com/sago007
- tread marks on pyra-handheld.com by ptitSeb (23 September 2017)
- "tribaltrouble". Archived from the original on 2014-12-16.
- tribaltrouble byteam-penguin on github.com
- GarageGames to Release T3D as Open Source Archived 2012-12-25 at the Wayback Machine on GarageGames (Eric Preisz 2012-10-09)
- "It's here! The MIT licensed Torque 3D GitHub repo is ready!". Archived from the original on 2012-09-24.
- Tribes 1 and 2 source code anywhere Archived 2015-09-24 at the Wayback Machine on garagegames.com (2013-01-04)
- Grip, Thomas (23 September 2020). "Amnesia is now open source!". Frictional Games. Archived from the original on 23 September 2020. Retrieved 23 September 2020.
- github.com/FrictionalGames/AmnesiaAMachineForPigs
- github.com/FrictionalGames/AmnesiaTheDarkDescent
- Grandstaff, Matt (11 January 2011). "Arx Fatalis source code, patch released!". Bethesda Blog. ZeniMax Media. Archived from the original on 7 October 2015. Retrieved 17 April 2020.
- Humphries, Matthew (21 April 2012). "Arx Libertatis: cross-platform port of Arx Fatalis released". geek.com. Retrieved 17 November 2012.
What’s interesting about Arx Fatalis is that development of the game started up again last year. Arkane Studios released patch 1.21 and with it open sourced the engine. That led to a new project called Arx Libertatis, which aimed to update the game to be played on multiple modern operating systems including Windows and Linux.
- "arx/ArxLibertatis". GitHub. Retrieved 17 April 2015.
- "Aquaria goes open source!". Wolfire Games blog. 2010-06-03. Archived from the original on 2013-06-05.
- source code Archived 2016-03-04 at the Wayback Machine of Blake Stone with license
- Benson, Julian (2013-07-08). "Blake Stone: Planet Strike source code released after almost 20 years". PCGamesN. Archived from the original on 2013-07-10. Retrieved 2013-07-11.
- "Apogee Releases Blake Stone Source Code". Apogee Software. 8 July 2013. Archived from the original on 11 August 2013. Retrieved 1 May 2020.
- "Canabalt "Open Source" Details, Licensing and Extra Information". December 31, 2010. Archived from the original on 2013-05-25. Retrieved 2013-06-06.
- GAME_LICENSE.TXT Archived 2015-10-19 at the Wayback Machine
- Hodgkins, Kelly (2010-12-31). "Popular indie game Canabalt goes open source". tuaw.com. Archived from the original on 2013-06-30.
The developers behind Canabalt confirmed that the game's source code will be made available as part of an open source project. The game will be licensed under the MIT Open Source license, which will let other developers use the engine source code in its entirety for both personal and commercial projects. While the code powering the game is available for the world to use, the game art, sounds, animations and Canabalt game-specific code is still proprietary.
- Larabel, Michael (June 6, 2014). "id Software's Softdisk Open-Sources Some Really Old Games". Phoronix. Archived from the original on June 9, 2014. Retrieved June 6, 2014.
- Bailey, Dustin (June 2, 2020). "The Command & Conquer source code is now available on GitHub". PCGamesN. Retrieved October 18, 2020.
- Let's get Keen Dreams re-released legally ! Archived 2015-09-05 at the Wayback Machine on indiegogo.com
- commander-keen-keen-dreams-source-code-released Archived 2015-07-22 at the Wayback Machine on slashdot.org
- Keen source code Archived 2014-09-18 at the Wayback Machine on GitHub
- Larabel, Michael (2012-11-02). "CoreCode's CoreBreach Game Goes Open-Source". Phoronix. Archived from the original on 2013-05-12. Retrieved 2013-06-22.
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- http://devlog.datarealms.com/cortex-command/cortex-command-1-0-playtest-preview/
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- GitHub commit on Interrupt/delverengine (2018-11-23)
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- Hurley, Leon (12 December 2014). "Here's Why the 3DO Port of DOOM Sucked". Kotaku UK. Gawker Media. Archived from the original on 6 January 2015. Retrieved 28 March 2020.
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- Prescott, Shaun (20 July 2020). "Source code for the SNES version of Doom has been released". PC Gamer. Future plc. Archived from the original on 20 July 2020. Retrieved 20 July 2020.
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- deadly-rooms-of-death Archived 2016-03-04 at the Wayback Machine (2008)
- SourceCode Archived 2015-03-27 at the Wayback Machine on forum.caravelgames.com "Yes, you can have all of the source code to the engine for our commercial products, DROD: King Dugan's Dungeon, DROD: Journey to Rooted Hold, DROD: The City Beneath, DROD: Gunthro and the Epic Blunder, DROD: The Second Sky, and DROD RPG: Tendry's Tale. You just can't have all the media, i.e. the levels, in-game writing, graphics, music, sound effects, and voice samples."
- Owen, Dave (2014-04-16). "Eldritch developer releases source code for free". VG247. Archived from the original on 2015-01-19. Retrieved 2015-01-18.
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- Calhoun, John (2016-01-29). "The shareware game from the Macintosh written by John Calhoun in the 90's". GitHub. Archived from the original on 2016-07-21.
- glypha-a-joust-like-game-now-on-iphone-for-free Archived 2016-07-21 at the Wayback Machine on toucharcade.com (2009-07-07)
- Glypha - Then and Now on boredzo.org/glypha
- glypha Archived 2016-07-21 at the Wayback Machine on ksuther.com
- glypha on github.com/kainjow
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- license.txt Archived 2016-10-05 at the Wayback Machine on hg.icculus.org/icculus/hge-unix
- McLaughlin, Ryan (3 August 2011). "Humble Indie Bundle Sells Lots, Windows Users Still Cheap". Hot Hardware. Archived from the original on 3 October 2011. Retrieved 3 August 2011.
- HGE-comes-to-Mac-and-Linux-guest-post-from-Ryan-Gordon Archived 2016-10-08 at the Wayback Machine on wolfire.com (August 2011)
- Ryan Gordon Ports HGE To Linux, Then Releases Code Archived 2016-06-04 at the Wayback Machine on Phoronix by Michael Larabel (August 07, 2011)
- hge-unix Archived 2015-10-30 at the Wayback Machine on icculus.org "August 7, 2011: Source code released to the world!"
- hge - DX8.1 and 9.0 on github.com
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- Deleon, Nicholas (6 September 2008). "Hexen, Heretic source codes released under GPL". TechCrunch. Archimedes Ventures. Archived from the original on 14 February 2012. Retrieved 10 April 2020.
- Lee, Matt (8 September 2008). "Heretic and Hexen liberated!". Free Software Foundation. Archived from the original on 10 September 2008. Retrieved 10 April 2020.
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- Lemma Archived 2015-08-19 at the Wayback Machine on github.com
- classic-3d-rts-machines-wired-for-war-goes-open-source-under-the-gpl on gamingonlinux
- machines on github.com/NightDive-Studio
- Machines - play one of the first 3D RTS ever on lordovervolt.com by Markol (2019-07-29)
- official-license-post Archived 2012-10-26 at the Wayback Machine on nooskewl.com (Trent, May 13, 2012)
- Monster RPG 2 Now Free and Open Source on nooskewl.com (November 11, 2012)
- Monster RPG 2 To Go Non-Free After Successfully Crowdfunding To Become Open Source UPDATED on gamingonlinux.com by liamdawe (October 2013)
- Thomsen, Michael (2011-08-24). "Building With Someone Else's Blocks: Going Open Source With Games". Gamasutra. p. 2. Archived from the original on 2013-10-29. Retrieved 2013-10-25.
[...] the game struggled to attract subscribers and was canceled after its first year. Disappointed with the turn of events, Cyan decided to release Myst Online: Uru Live as an open source game in 2010 hoping fans would be able to give the game a new life.
- "unknownworlds / NS". GitHub. Archived from the original on 2015-07-19.
EXCLUDED CODE: The code described below and contained in the Natural Selection Source Code release is not part of the Program covered by the GPL and is expressly excluded from its terms.
- Unknown Worlds unleashes Natural Selection source code Archived 2014-04-07 at the Wayback Machine by Jenna Pitcher on Jan 23, 2014 at Polygon.com
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- Jupiter EX engine is GPL!? Somebody's working on a modern port of NOLF2!!! on nolfgirl.net (2013)
- lithtech
- nolf2-source-released-but-to-what-end Archived 2014-02-28 at the Wayback Machine (July 2011)
- Sierra has released the No One Lives Forever 2 Toolkit Archived 2011-06-15 at the Wayback Machine on gamershell.com
- Get a window into classic Mac dev with Glider source code Archived 2016-07-21 at the Wayback Machine by Christian Nutt on Gamasutra (February 12, 2016)
- Calhoun, John (2016-01-29). "Sources to Pararena, the commercial Macintosh game by John Calhoun, published by Casady & Greene, Inc". GitHub. Archived from the original on 2016-07-21.
- Paradox Interactive - Penumbra: Overture premieres game on Gamer's Gate Archived 2007-09-28 at the Wayback Machine
- "Penumbra: Overture Game And Engine Source Code Released For Free". MegaGames. 2010-05-14. Archived from the original on 2012-04-23. Retrieved 2013-10-11.
- O'Connor, Alice; Leahy, Brian (13 August 2010). "Source Code Released for Wolfenstein: Enemy Territory and Return to Castle Wolfenstein". Shacknews. GameFly Media. Archived from the original on 18 September 2011. Retrieved 1 May 2020.
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- Croteam Open-Sources The Serious Engine Archived 2016-07-21 at the Wayback Machine by Michael Larabel on Phoronix (11 March 2016)
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- Source Code von "Shogo: MAD" freigegeben! on golem.de (1998, in German)
- Katana-Steel/lithtech in December 2019
- "Going Open Source!". soaos.sourceforge.net. 2003-06-23. Archived from the original on 2011-07-24. Retrieved 2011-08-02.
In order to give the Siege game an extended practical life, allow ongoing player support, give the game a chance to be made available on other platforms, and to share our technical learning experience with the game development community, the Board of Directors at Digital Tome LP have agreed to release the Delphi source to the Siege game to the Open Source community under an LGPL license!
- "Siege". Archived from the original on 2016-09-29. Retrieved 2014-08-29.
I am currently engaged in discussions to re-release Siege of Avalon. Stay tuned.
- Siege-exe-aus-Source-Code-Delphi Archived 2018-05-03 at the Wayback Machine by Raptor on soamigos.de (September 2017, in German)
- news archived 2000
- snowboarding-soul-ride-engine-goes-gpl Archived 2015-07-16 at the Wayback Machine on slashdot.org
- 20 Jan 2003 - Soul Ride Engine goes GPL Archived 2001-01-27 at the Wayback Machine on soulrider.com
- http://www.doublefine.com/forums/viewthread/15918/#369949 Archived 2015-12-22 at the Wayback Machine
- derelictgames / Spacebase V2 Updated Code Archived 2015-12-22 at the Wayback Machine on gitlab.com "This is a community maintained fork of DoubleFine's original game, which was open sourced May 12, 2015 under the Common Public Attribution License"
- Plunkett, Luke (2015-10-06). "Fans Keep Working On Cancelled Strategy Game". Kotaku. Archived from the original on 2015-10-07. Retrieved 2015-10-06.
- readme_iWolf.txt: «I released the original source for Wolfenstein 3D many years ago, originally under a not-for-commercial purposes license, then later under the GPL.»
- Polyacov, Ivan [@AstralHeroes] (4 March 2020). "Apus Game Engine is now published at GitHub under BSD license" (Tweet). Archived from the original on 16 November 2020. Retrieved 15 November 2020 – via Twitter.
- Polyacov, Ivan (30 September 2020). "Source code of the Astral Towers game". Patreon.
As promised, here is the source code of the Astral Towers game recently published on Steam. It can be compiled with Delphi Community Edition.
- Speed Haste Game Source Code Archived 2016-07-21 at the Wayback Machine on github.com (February 13, 2012)
- Plunkett, Luke (2013-04-03). "Lucasarts' Closure Convinces Developers To Release Awesome Star Wars Source Code". Kotaku. Archived from the original on 2013-04-07. Retrieved 2013-04-04.
In the wake of Lucasarts' closure today, Raven - the developers of the thoroughly excellent Jedi Outcast - have decided to release the source code for the game. Oh, and the code for its sequel, Jedi Academy, as well.
- Brouwer, Shane (27 July 2012). "Super Lemonade Factory releases source code". Archived from the original on 21 July 2016. Retrieved 10 July 2016.
- shockmac on github.com/NightDiveStudios
- IamA Founder of Night Dive Studios, Stephen Kick - We track down and restore classic video games! AMA! Archived 2016-07-21 at the Wayback Machine by Stephen Kick on reddit.com "Lost source code is one of the things that genuinely depress me and we're currently evaluating the idea of releasing the code we've discovered and restored to anyone who wants to store it or modify it.[...] We have released the source to Strife: Veteran Edition and we are planning on releasing more code in the future." (22 June 2016)
- System Shock Remake Feedback Request - Night Dive Studios on systemshock.org "We've also tracked down the source code to the original game and will be releasing it to the community once it's ready." (10 February 2016)
- system_shock_source_code_released_under_gpl
- Logan Booker (2018-06-16). "'Shockolate' Is A Cross-Platform System Shock Built On The Original, Open-Sourced Code". Kotaku.
- "弊社製品のムービー再生にxvid.orgのムービー展開ライブラリを使用していた件について。" [Announcement Concerning Our Company's Use of Xvid.org's Video Codec Library for Video Playback in Products] (in Japanese). Aquaplus. 2005-12-22. Archived from the original on 2006-11-26. Retrieved 2010-12-18.
- "Leaf Forced to Release Game Source Code". Anime News Network. March 1, 2006. Archived from the original on November 4, 2008. Retrieved 2008-12-11.
- aquaplus-sources Archived 2016-07-21 at the Wayback Machine on github.com
- xlvns on github.com
- MKXP: Open-Source, Linux Engine To RPG Maker XP Archived 2017-04-06 at the Wayback Machine by Michael Larabel on Phoronix (8 January 2014)
- mkxp-ToTheMoon Archived 2015-10-31 at the Wayback Machine on github.com
- ptitSeb's Beta Lair Archived 2017-04-06 at the Wayback Machine by ptitseb on pyra-handheld.com
- mkxp-abs
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- letsmakeavoxelengine/ Archived 2017-02-02 at the Wayback Machine on sites.google.com
- Vox Archived 2013-06-07 at the Wayback Machine on Steam Greenlight
- Vox Archived 2016-07-15 at the Wayback Machine on github.com/AlwaysGeeky/Vox
- badman (13 August 2010). "Wolfenstein: Enemy Territory Goes Open Source". Splash Damage. Archived from the original on 16 August 2010. Retrieved 1 May 2020.
- massgate on GitHub
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- Agony by Franck Sauer on "From fat pixels to tiny triangles" (accessed 2020-10-30)
- "Source code released of legendary Amiga game Agony". GenerationAmiga.com. 8 July 2020. Archived from the original on 9 July 2020. Retrieved 9 July 2020.
- DOSAnacreonSource20.zip Archived 2011-12-29 at the Wayback Machine
- "Beneath a Steel Sky". classicdosgames.com. 2005. Archived from the original on 2016-07-03. Retrieved 2017-10-04.
Source code for Beneath a Steel Sky in Assembly language (415,225 bytes) xxxx
- "Latest Developments". ScummVM.org. August 2, 2012. Archived from the original on August 22, 2013. Retrieved July 14, 2013.
Support for Beneath a Steel Sky, made possible thanks to Revolution Software supplying us with the original assembly source code!
- Leyda, Jeff. "The Beyond Castle Wolfenstein Project – Beyond Castle Wolfenstein Project Quick FAQ". oldskool.org. Archived from the original on 2014-09-07. Retrieved 2014-08-31.
Q) Do you have the rights to distribute this game? A) Hopefully! Silas Warner's wife has granted permission to release the source code and game executables as a small memorial of his work.
- Younger, Paul (2008-06-19). "Beyond Protocol Interview". IncGamers.com. Archived from the original on 2011-07-13. Retrieved 2009-04-30.
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- afterprotocol.com Archived 2017-03-20 at the Wayback Machine
- bobsgame Archived 2017-01-17 at the Wayback Machine on github.com
- Bob's Game source code released! Archived 2017-02-28 at the Wayback Machine by Daniel Berkhart on caltrops.com (2016-08-25)
- carnivores_2
- carnivores-2ice-age-source-code on moddb.com
- Crystal Mines (Source Code) (NES Game) Archived 2016-04-09 at the Wayback Machine on pdroms.de (Aug 26, 2011)
- Post subject: Crystal Mines Source Code Released Archived 2016-04-09 at the Wayback Machine on nesdev.com (August 2011)
- Crystal%20Mines%20(NES)%2011151989%20Version.zip in "Crystal Mines License.txt" "Ken's license: - The name "Crystal Mines", the graphics, sound, music, and the levels are NOT open source. People other than me worked on them, and for that version of the game actually got royalties and still have ownership. It's OK to possess them for personal use, but they can't be reused in a new game or distributed for profit. - As the sole author of the code, I (Ken Beckett) will allow the source code for the NES version to be used in other works, provided that: A) Credit is given to 'Ken Beckett' in both the portions of re-used source code AND in the credits of the new game, and B) That the code is modified sufficiently such that the new game is not easily recognizable as being Crystal Mines with new graphics/sound/music. -Ken"
- digsrc_orig.zip Archived 2016-04-25 at the Wayback Machine
- whatsnew.html Archived 2016-01-19 at the Wayback Machine on Digger.org
- download Archived 2011-10-17 at the Wayback Machine on digger.org
- Grant of license to reproduce Dungeons of Daggorath by Douglas J. Morgan "I hereby grant a non-exclusive permanent world-wide license to any and all Color Computer site administrators, emulator developers, programmers or any other person or persons who wish to develop, produce, duplicate, emulate, or distribute the game on the sole condition that they exercise every effort to preserve the game insofar as possible in its original and unaltered form. [...] Anyone willing to pay for the copying of the listing (at Kinko's) and shipment to them, who intends to use it to enhance or improve the emulator versions of the game is welcome to it."
- Matt Barton (13 October 2006). "A Review of DynaMicro's The Dungeons of Daggorath (1982)". Armchair Arcade. Archived from the original on 11 September 2010.
Programmers and coders may also be interested in the source code should email Louis Jordan. Before doing so, check out the License Grant offered by Doug Morgan, former president of Dyna Micro. Apparently he's willing to give the code to anyone willing to cover the costs of shipping and copying (at Kinko's) the listing.
- Project Page for Dungeons of Daggorath PC-Port by Richard Hunerlach (August 28, 2002, archived)
- DoD for Linux 0.51 Archived 2016-04-23 at the Wayback Machine Linux version with source code (2012)
- http://riscos.blog.com/2012/06/02/games-corner-dungeons-of-daggorath-port-released/%5B%5D
- psp-homebrew-dungeons-of-daggorath Archived 2016-04-24 at the Wayback Machine
- "The End of an Era!". Windward. 2005-10-01. Archived from the original on 2005-11-24. Retrieved 2013-10-26.
October 1, 2005: We just sold the last copy of Enemy Nations. [...] If you have a copy and want to give a copy to a friend - you have our permission to burn a CD with a copy of Enemy Nations - with one major caveat. You must give them the game. You cannot sell it to them. You cannot include it as part of anything you sell. It cannot be included with any product or magazine as a free extra. The person making the copy must even buy the blank CD. It must be a true free gift given totally separate of anything else.
- source code mirror Archived 2014-03-29 at the Wayback Machine at atomicgamer.com
- get-your-very-own-free-and-legal-copy Archived 2013-10-29 at the Wayback Machine (January 2006)
- "License for Original Code". launchpad.net/enations. Archived from the original on 2017-02-13.
This is released under a limited license: 1) No rights are given to the game Enemy Nations, the trademark Enemy Nations, or the concept. 2) Windward intends to someday create an Enemy Nations II and reserves all rights for all future versions of the game. 3) You may not sell anything derived from this code, art, or anything else included. 4) This is released solely for people to learn from the code and to make fixes in the existing code that they will make available for free. If you don't like these restrictions, don't use this code/data.
- IgorLabs classic games page Archived 2015-06-30 at the Wayback Machine
- FortApocalypse Archived 2016-07-21 at the Wayback Machine on GitHub.com
- Free Fall Archived 2015-05-21 at the Wayback Machine on Ian Bell's website "I wrote Free Fall in 1982/3 for the BBC Micro. It was published by Acornsoft in 1983. I like to describe Free Fall as the first ever beat-em-up so as to claim, with tongue somewhat in cheek, to have invented two gaming genres."
- You can get it here. Archived 2016-04-01 at the Wayback Machine on thatgamecompany.com by Jenova (Sep 21, 2009)
- flOw.source.zip Archived 2016-04-02 at the Wayback Machine on jenovachen.com
- https://raw.github.com/HoverRace/HoverRace/master/license.txt
- "/trunk/license.txt – HoverRace". Svn.igglybob.com. 2008-11-29. Archived from the original on 2013-02-16. Retrieved 2013-01-05.
- Source Code License (2008-11-29, archived)
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- Kiloblaster_and_Xargon_Freeware_License Archived 2013-09-20 at the Wayback Machine
- Kiloblaster Archived 2012-11-02 at the Wayback Machine Allen Pilgrim declared Kiloblaster freeware and released the source code.
- Xargon Archived 2016-04-18 at the Wayback Machine Allen Pilgrim on pyra-handheld.com "I own the copyright for the game and have released the entire trilogy as freeware. The source code is also released as freeware. I am perfectly fine with people creating ports of the game and using all the assets for those ports. What I do not authorize is someone taking the assets and creating a new game."
- Amiga Games Archived 2016-07-21 at the Wayback Machine
- Kumquat & Cantaloupe - Full Games and Source Archived 2014-09-07 at the Wayback Machine on 22 November 2012
- MagusPreservation
- RonnyMagus on github.com
- Cyberdogs dogs_src.zip (archived 2000)
- "Archived copy". Archived from the original on 2011-06-13. Retrieved 2009-07-29.CS1 maint: archived copy as title (link)
- roboforge Archived 2011-06-13 at the Wayback Machine on ign.com
- source Archived 2016-07-21 at the Wayback Machine on sroboforge.altervista.org
- rocky racers Archived 2016-04-20 at the Wayback Machine on mobygames
- sourcecode (July 2004)
- sourcecode Archived 2004-07-08 at the Wayback Machine on positech.co.uk/rocky
- "linuX-gamers.net - Savage: The Battle for Newerth now Freeware". linux-Gamers. Archived from the original on June 8, 2008. Retrieved 2008-11-02.
- savage1-source-zip Archived 2017-02-20 at the Wayback Machine source code mirror
- Newerth Savage XR - About us Archived 2013-01-15 at the Wayback Machine on newerth.com "In 2007 Newerth.com acquired the source code for Savage: The battle for Newerth and announced its continued development with the implementation of new features and content into the game via a patch named XR, incorporating previous community modifications."
- stellar-conquest-3-hostile-takeover Archived 2017-03-13 at the Wayback Machine on MobyGames
- NecroBones DOS Shareware/Freeware Games & Demos Archived 2016-10-21 at the Wayback Machine on necrobones.com/
- stellar_frontier_source_eula.txt STARDOCK SHARED SOURCE STELLAR FRONTIER LICENSE (mirror Archived 2015-11-23 at the Wayback Machine)
- "Stellar Frontier Source Code – Released". stellarfrontier.ss-network.net. 2008-11-18. Archived from the original on December 31, 2009. Retrieved 2013-10-13.
As of Tuesday, November 18, 2008, the Stellar Frontier source code has officially been released by Stardock Corporation. End-User License Agreement was updated June 19th 2010.
- Stellar Frontier Development Log Archived 2015-08-01 at Archive.today on nexus.stellarfrontier.net/
- Treasures of a Slaver's Kingdom Archived 2016-01-28 at the Wayback Machine
- tag:C source available Archived 2016-07-21 at the Wayback Machine on ifdb.tads.org
- world-train-royale on gamersgate.com
- world-train-royale-is-free-as-in-beer-and-speech Archived 2016-02-15 at the Wayback Machine on versus-software.com (2011)
- trainroyale Archived 2016-03-14 at the Wayback Machine on sourceforge.com
- Allen Pilgrim declared Xargon freeware and released the source code. Archived 2012-08-28 at the Wayback Machine on classicdosgames.com
- xargon Archived 2017-05-05 at the Wayback Machine on github.com
- Ashley, Dave (13 May 2020). "Thrillride pinball added". GitHub. Archived from the original on 13 May 2020. Retrieved 13 May 2020.
- license.txt "Source code remains property of Black Forest Games GmbH and is free for non-commercial use only."
- gog.com team (2015-03-24). "Release: Airline Tycoon Deluxe". gog.com. Archived from the original on 2015-08-09. Retrieved 2015-08-01.
Airline Tycoon Deluxe is a golden oldie with native versions for Mac OS X and Linux. As an added bonus, the package here comes with the game's Windows source code for your viewing and tweaking pleasure. You sure don't see that every day.
- García, Paulo (20 May 2019). "Commodore 64 developer of Altered Beast, Rampage, Atomic Robokid releases source code after 30+ years!". Vintage is the New Old. Archived from the original on 15 February 2020. Retrieved 27 June 2020.
- Alien Breed 3D by John Girvin "In March 1997, Team17 released the source code to AB3D's sequel, “Alien Breed 3D II: The Killing Grounds” (known as TKG), on the cover CD of Amiga Format issue 95. It was megabytes of undocumented, disorganised, messy assembly language. Andy Clitheroe, the lone programmer of both games, must have been some kind of genius, I think. The official release was of the TKG source code. However, when poking around the CD I found the original (and equally messy) AB3D source too." (archived, 2009)
- alien-breed-3d-ii-quellcode Archived 2017-04-17 at the Wayback Machine on successdenied.com by Vince (December 13, 2010, in German)
- a3dsrc src mirror on aminet.net
- Smith, Jason. "Jaguar Sector II Atari Jaguar Software Price and Rarity Guide". jaysmith2000.com. Archived from the original on 17 November 2013. Retrieved 2018-09-10.
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A31Chris: These are actually all Curts stuff that he shared with JaySmith to support for about a year. This stuff should all be available to everyone now. Atarimuseum.com
- Aliens Vs Predator - Source code update Archived 2013-01-18 at the Wayback Machine (January 4, 2013)
- AvP/trunk/License.txt The source code to Aliens Vs Predator is copyright (c) 1999-2000 Rebellion and is provided as is with no warranty for its suitability for use. You may not use this source code in full or in part for commercial purposes. Any use must include a clearly visible credit to Rebellion as the creators and owners, and reiteration of this license.
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- Han-Tani, Melos [@han_tani] (4 April 2020). "I just open-sourced our surreal Zelda-like, Anodyne!! The code, art, and music are now free to be used for mods, fan games, sprite webcomics, AMVs, etc! I also included the level editor. Check it out here and make something cool!!" (Tweet). Archived from the original on 9 April 2020. Retrieved 9 April 2020 – via Twitter.
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30 months ago, at the 2011 Game Developers Conference, somebody asked me to release the source code for my old games. I said I would look into it. [...] I have begun the process of preparing my source code for general distribution.
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- Blue Max source code for you. Archived 2017-04-15 at the Wayback Machine on atariage.com by Kevin Savetz (Mar 5 2016)
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[...] We have also added new support for the following games: Broken Sword 1 and Broken Sword 2. Many thanks to Revolution for providing us with the source-code to these games.
- Call-to-Power-II-Source-Code-End-User-License-Agreement Archived 2012-11-09 at the Wayback Machine
- Bell, John (2009-10-01). "Opening the Source of Art". Technology Innovation Management Review. Archived from the original on 2014-03-30. Retrieved 2012-12-30.
[...]that no further patches to the title would be forthcoming. The community was predictably upset. Instead of giving up on the game, users decided that if Activision wasn't going to fix the bugs, they would. They wanted to save the game by getting Activision to open the source so it could be kept alive beyond the point where Activision lost interest. With some help from members of the development team that were active on fan forums, they were eventually able to convince Activision to release Call to Power II's source code in October of 2003.
- Product_2K_Games_Firaxis_Release_Civ_IV_SDK Archived 2017-01-04 at the Wayback Machine on gamasutra.com
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- Civ4: Better AI Archived 2017-01-04 at the Wayback Machine on sourceforge.net "Major improvements to AI naval and air unit handling [...] Well over 100 bug fixes"
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- Samuel Wicks (2016-04-26). "Wondrous: The Civilization V Community Patch Project". Rock, Paper, Shotgun.
there’s another big new release expected, but it’s not an official expansion. It’s the Community Patch Project (CPP; to be named Vox Populi on release), a community-made mod that overhauls and improves a majority of the game’s systems in an attempt to make Civilization V the best game it possibly can be.
- Patrick Klepek (2017-04-26). "The Modders Who Decided to Overhaul the AI in 'Civilization V'". Vice.com.
Community Patch was actually built upon another mod. Since development began in 2014, it's become its own thing, prompting a rebranding: Vox Populi. Besides improving upon the game's AI, Vox Populi tweaks the game's balance, and fixes bugs that were left behind after Firaxis moved on. [...]we have to respect them for giving us the source code, and that must have taken some courage
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...Uncanny Valley; Cook, Serve, Delicious; Ink, Shep Hard, and Angry Chicken: Egg Madness [...] Extreme Burger Defense, Freeway Mutant [...] Galactic Missile Defense, Solstice, and Home [...] 10 Second Ninja X GameMaker Edition [...] Flop Rocket.
- Donnelly, Joe (7 September 2016). "GameMaker's Humble Bundle offers big savings on development tools". PC Gamer. Future plc. Archived from the original on 8 September 2016. Retrieved 29 April 2020.
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- Edwards, Kevin [@KevEdwardsRetro] (5 November 2018). "I have just released the 6502 source code for my BBC Micro game, Crazee Rider, from 1987" (Tweet). Archived from the original on 6 November 2018. Retrieved 27 December 2019 – via Twitter.
- Edwards, Kevin [@KevEdwardsRetro] (2 April 2019). "I have been on Twitter for almost one year now. To mark this anniversary I have decided to release the full Acorn Electron source code for Crazee Rider from 1987. You can find the fully buildable 6502 source code on GitHub. I hope you find it of interest" (Tweet). Archived from the original on 29 April 2020. Retrieved 27 December 2019 – via Twitter.
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We are not releasing Unity as open source. Not even a little bit. (Sorry.) It’s not that we don’t like open source. We’d open source all of Unity today if we thought we could get away with it and still be in business tomorrow, and we do have a growing number of open source projects. But the main engine will remain proprietary for the foreseeable future, and the C# reference source code is released under a license which only permits you to read the code, not modify it. Please consult the full license text for details before you get carried away.
- oakwarrior/DeathAndTaxes on github.com
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- death-ray-manta-steam Archived 2017-04-13 at the Wayback Machine on Rock, Paper, Shotgun
- (GET) DEATH RAY MANTA - Game Maker Studio source Archived 2017-04-13 at the Wayback Machine on blackworldforum.com
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- Dunkin, Alan (1998-01-26). "Descent Source Code Released". gamespot.com. Retrieved 2013-01-13.
Parallax Software, the software developer that created the popular three-dimensional action games Descent and Descent II, has released Descent's source code (version 1.5) to the public domain for noncommercial purposes.
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- Freeware releases "The rights situation has been resolved, and Terry Pratchett and his agent Colin Smythe have approved the source release and future freeware re-issuing of the game. We are currently awaiting receipt of the engine source code." on adventure-treff.de (2005, in German)
- Discworld Source Code Retrieved – ScummVM Developers Thrilled and Already Coding Archived 2016-02-10 at the Wayback Machine by James Woodcock (May 2008)
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- Digging for treasure in Aladdin's source code by Rich Whitehouse by The Video game history foundation (October 7, 2017)
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- Edwards, Kevin [@KevEdwardsRetro] (3 March 2019). "If you'd like to see how games were programmed in 1986 then you can take a look at the complete source code for my BBC Micro game Galaforce" (Tweet). Archived from the original on 29 April 2020. Retrieved 27 December 2019 – via Twitter.
- Edwards, Kevin [@KevEdwardsRetro] (4 April 2019). "The full 6502 source code for my 1986 shoot-em-up game 'Galaforce' on the Acorn Electron is now available on GitHub" (Tweet). Archived from the original on 29 April 2020. Retrieved 27 December 2019 – via Twitter.
- Sebayang, Andreas (2009-03-23). "Gothic 3 Community Patch soll fast alle Fehler beheben – Mehr als 700 Veränderungen im letzten Community Patch" (in German). Golem.de. Archived from the original on 2013-01-22. Retrieved 2013-01-06.
Das Team hatte Zugriff auf den Quellcode von Gothic 3. Zusätzlich wurde auch inhaltlich an dem Spiel gearbeitet, da laut Patch Team ein Beheben aller Fehler nicht allein durch das Verändern des Quellcodes möglich war.
- Grand Monster Slam (Source Code) by Rolf Lakaemper, Hartwig Niedergassel on the Internet Archive (March 8, 2017)
- Double Fine Releases Source Code for Hack ‘n’ Slash Archived 2016-04-01 at the Wayback Machine by Garrett Glass (on September 11, 2014)
- Hack ‘n’ Slash Leaves Early Access, Brings Source Code Archived 2016-04-12 at the Wayback Machine on Rock, Paper, Shotgun by Ben Barrett (September 10, 2014)
- Hacker Evolution Source code Archived 2016-01-26 at the Wayback Machine
- Atari source code archive on pigwa.net
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- Largent, Andy (2003-10-08). "Homeworld Source Code Released". insidemacgames.com. Archived from the original on 2013-10-12. Retrieved 2012-12-23.
- Macintosh Homeworld
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[…] released port of HomeworldSDL. […] enables your Pandora to experience the excellent work done by the guys at HomeworldSDL.
- (Announce) Homeworld (updated 2012/12/03) Archived 2015-04-02 at the Wayback Machine on maemo.org
- Homeworld (from 1999) on Android. on YouTube (8 June 2014)
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- BugsMenot (2013-04-01). "Congratulations on the purchase of Homeworld IP! Re-licensing of code requested". gearboxsoftware.com. Archived from the original on 2015-02-17. Retrieved 2014-08-11.
[...]it was deemed pretty much impossible to continue to do anything with the released source code that was made available.[...]We just ask that the already released source code be made available under a GPL V2.0 or higher license and hosted on GitHub.
- BurlesonGBX (2013-09-05). "Re: HW source now?". gearboxsoftware.com. Archived from the original on 2015-03-08. Retrieved 2014-08-11.
The license agreement for the original release of the source still stands.[...] If someone is interested in doing something under a different license using the old opensource code, there is always room to talk.
- Buchanan-Smith, Matt (May 28, 2017). "Hover Strike Source (Tank)". Facebook. Retrieved 2018-09-11.
Source Code for the Atari Jaguar game Hover Strike which was code named 'Tank'. There is another version of the source code floating about which is apparently for the CD version. Not seen any documentation for this but I think it's the cart version, originally from the Atari HQ CD
- Here's the source code to Hundreds. Don't laugh. Archived 2015-05-09 at the Wayback Machine by Greg Wohlwend on intuitiongames.com (October 25, 2010)
- McWhertor, Michael (January 3, 2013). "Hundreds' metamorphosis from late night dream to addictive iOS puzzle game". Polygon. Vox Media. Archived from the original on January 6, 2013. Retrieved June 7, 2014.
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ScummVM supports [Inherit the Earth] as of 0.8.0, thanks to [...] the fact that [Wyrmkeep Entertainment] kindly provided us with all source code and the rights to reimplement it.
- Thomas, Neil (20 January 2020). Retro Tea Break: Eugene Sandulenko SCUMMVM Team Leader (Podcast). YouTube. Event occurs at 12:00. Retrieved 19 July 2020.
Sometimes, [the source code came] from original developers, like it was with Revolution Software or like it was with Adventure Soft later or as it was with Joe Pearce and his Inherit the Earth and [The Labyrinth of Time] games [...]. But sometimes, a number of times, it has come from the IP right owners. So you know, some companies go bankrupt and then later another company acquire assets and they would like to put the game, let's say, on GOG –Good Old Games–, and this is where they approach us and they “Hey guys, here is the source code.” Very often under NDA. For instance, it was the case with Tony engine.
- help_me_rescue_abandoned_dos_games on reddit by pichichi010 "[...] We got the Amiga source code for Jim Power, and it was 100K code lines in one single file lol." (2017)
- labflsrc.zip Archived 2016-07-21 at the Wayback Machine on advsys.net 2001
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- Filippos "md5" Karapetis (23 January 2016). "The labyrinth must be destroyed!". ScummVM. Archived from the original on 3 February 2016. Retrieved 18 September 2020.
Many thanks to The Wyrmkeep Entertainment Co. for sharing the game's original source code with us!
- source_code_eula.txt on rakeingrass.com (archived 2012)
- Source code of Larva Mortus on rakeingrass.com (May 1, 2009, archived)
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- https://web.archive.org/web/20121112171514/http://blog.rakeingrass.com/?cat=3
- Gaming Alexandria [@GamingAlexandri] (11 May 2020). "The source code for the Game Boy Color game "Little Mermaid II - Pinball Frenzy" together with a GBC emulator has been released by the sole developer Dave Ashley" (Tweet). Archived from the original on 12 May 2020. Retrieved 12 May 2020 – via Twitter.
- Gilbert, Paul (13 September 2015). "Elementary, my dear Watson". ScummVM. Archived from the original on 22 October 2015. Retrieved 14 June 2020.
The ScummVM Team is proud to announce support for both games of The Lost Files of Sherlock Holmes: The Case of the Serrated Scalpel, and The Rose Tattoo. Many thanks go to Electronic Arts, for allowing us access to the original sources.
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This is the Shared Source release for MechCommander 2. This release contains all of the source code and source assets required to build MechCommander 2. This release can be used with the Microsoft XNA Build March 2006 Community Technology Preview (CTP).
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Bob Mitchell: What has prompted you to release the source code for MiG Alley and Battle of Britain? Dave Whiteside: Because we are no longer doing flight sims [after Empire took us over at the end of 2001], and we would not be able to publish any patches that were required [no money was allocated to this], rather than let MiG die and all the code sit doing nothing it was considered a good idea, a swan song, if you like, for Rowan [after 13 years in the flight sim market].
- migalley.exe source code mirror
- Mr.Do! GameBoy source text file by Wesley Knackers (2007, archived)
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- Wen, Howard (2004-06-10). "Keeping the Myths Alive". linuxdevcenter.com. Archived from the original on 2013-04-06. Retrieved 2012-12-22.
[...]fans of the Myth trilogy have taken this idea a step further: they have official access to the source code for the Myth games. Organized under the name MythDevelopers, this all-volunteer group of programmers, artists, and other talented people devote their time to improving and supporting further development of the Myth game series.
- Myth II 1.7.2 Released for Linux! Archived 2013-07-12 at the Wayback Machine on projectmagma.net (28 Feb 2012)
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Prince of Persia creator Jordan Mechner believed that the source code to the game's original Apple II version was gone when he failed to find it in 2002. Ten years later, Mechner's father uncovered a box of old games at the family home, and among them were disks containing Prince of Persia's bedrock program.
- Mastrapa, Gus (2012-04-20). "The Geeks Who Saved Prince of Persia's Source Code From Digital Death". Wired. Archived from the original on 2012-12-08. Retrieved 2012-11-30.
- SDLPoP Archived 2017-05-05 at the Wayback Machine on github.com
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- We have the storm engine! Archived 2017-03-22 at the Wayback Machine by Keith on piratesahoy.net (Dec 24, 2009)
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gave source code to subsim.com [...] a fund raising drive netted more then $7000 to jump-start Project Messerwetzer [...] Skilled volunteers and playtesters rallied to the call [...] a free 5MB to 6MB patch that will be finally polished and playtested. The original crippling flaw, multiplayer instability, has been dramatically minimized [...]
- Najciekawsze modyfikacje (15/03/10) Archived 2016-08-03 at the Wayback Machine on gry-online.pl by Adrian Werner "Silent hunter II: Pacific Aces - podstawowa wersja gry obsadzała nas w roli kapitana U-Boota na Atlantyku, podczas gdy ten mod dodaje okręty podwodne marynarki amerykańskiej i wody Pacyfiku. Poza tymi dodatkami Pacific Aces wzbogaca grafikę, dźwięk i strukturę misji w kampanii oraz wprowadza szereg poprawek do mechanizmów rozgrywki." (March 15, 2010, in Polish)
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Today we have a very important announcement for our modders and our community. We decided to give you 100% complete access to Space Engineers’ source code. This comes as a continuation of our decision to give more freedom to modders and community.
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- Spacewar! assembly source code on textfiles.com
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- Star Raiders (Version 25.1/Stardate "26-JUL-79") Archived 2016-07-21 at the Wayback Machine on github.com/XioNYC
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- Wilmunder, Aric (2015), The Authoritative Star Raiders II v0.3.pdf, atariage.com, archived from the original on 2015-12-22
- Elite Force 2 - Quellcode veröffentlicht PC Games (06 November 2003)
- Elite Force I and II Tools and File - Elite Force II EF2 Source Code on eliteforce.gamebub.com
- Brian Fitzgerald grants release of source code to TAXMAN, Pac-Man clone Archived 2016-09-17 at the Wayback Machine (August 7, 2015)
- source-code-to-be-taxman-released (August 7, 2015)
- taxman Archived 2016-02-26 at the Wayback Machine on GitHub
- "I have access to Terminal Velocity, Fury3, and Hellbender's official source codes."
- Velocity/Fury3/Hellbender modern port WIP Archived 2016-07-21 at the Wayback Machine on vogons.org (July 2015)
- Der Clou! Quellcode veröffentlicht Archived 2016-01-16 at the Wayback Machine on dlh.net (in German, 13 July 2000)
- Spieleklassiker: Der Clou (1994) Archived 2016-01-16 at the Wayback Machine by Patrick Jedamzik (in German, 26 December 2006)
- cosp.sourceforge.net/ Archived 2008-04-09 at the Wayback Machine
- Dev rescues '80s text adventure source code by baking tapes in an oven on Gamasutra.com by Alex Wawro (June 28, 2017)
- Magnetic Scrolls Original Games Source Code Recovered! on strandgames.com (June 19, 2017)
- 1980-07-recreational-computing.pdf Archived 2016-11-08 at the Wayback Machine
- Game 90: The Wizard's Castle (1980) Archived 2016-04-25 at the Wayback Machine on crpgaddict.blogspot.de (February 25, 2013)
- The Wizard's Castle windows port Archived 2016-05-24 at the Wayback Machine by derelict (2004)
- Aidley, Tim (26 January 2021). "The Future of Tilt Brush". Google Open Source. Alphabet Inc. Archived from the original on 26 January 2021. Retrieved 26 January 2021.
- sev (25 October 2012). "Tony Tough, a New Supported Game". ScummVM. Archived from the original on 11 June 2013. Retrieved 19 July 2020.
The ScummVM team, in close collaboration with Nayma soft (the legal rights owner) and DotEmu, is happy to announce support for Tony Tough in our development branch.
- Tornado source code and Interplay on moodurian.com/tornado by Frankie Kam (March 11, 2016)
- tornado-dos-flightsim Archived 2017-06-26 at the Wayback Machine on github.com/tornadorebooted
- tornado-dos-flight-sim-source-code-released-on-GitHub Archived 2017-02-16 at the Wayback Machine on assemblergames.com (2017)
- Escape from Mount Drash Archived 2016-07-21 at the Wayback Machine on peroxide.dk "was ported from the Vic20 to PC by Telemachos. Included in the download is the sourcecode for the project. Mount Drash 0.4 Mb .zip" (2003)
- Meer, Alec (2012-10-12). "Patchy Like It's 1998: Unreal 1 Updated". rockpapershotgun.com. Archived from the original on 2013-01-15. Retrieved 2012-12-21.
The list of fixes upon fixes are too long to mention here, but the essential purpose of v227 is to add DirectX9 and OpenAL support as well as mending everything that needs mending. Epic are aware of and permit the patch [...]
- Epic's Tim Sweeney Says That Unreal Engine 1 May One Day Go Open Source on dsog.com by John Papadopoulos (January 19, 2015)
- Rose, Michael (2010-07-09). "Darwinia and Multiwinia Source Code Released". indiegames.com. Archived from the original on 2013-10-03.
- The Source Code Archived 2012-12-30 at the Wayback Machine We get bored easily and once we've finished a game we want to work on something completely different. But wait, what if there's other cool stuff that could be done that we left out? If you are a programmer you can take any of our games to the next level by becoming a developer. Buy access to our hosted SVN repo and get forum access to chat about your mods with the rest of the community.
- Savetz, Kay [@KaySavetz] (8 April 2020). "Carol Shaw sent me the source code for Checkers for the Atari 2600, asking me to share it online. I carefully photographed it and uploaded it to @internetarchive. Perhaps someone will turn it into a text source code file" (Tweet). Archived from the original on 17 April 2020. Retrieved 17 April 2020 – via Twitter.
- vvvvvv-is-now-open-source on distractionware.com (2020)
- license.md on github.com/TerryCavanagh/VVVVVV
- Brown, Fraser (10 January 2020). "VVVVVV goes open source for its 10 year anniversary". PC Gamer. Retrieved 10 January 2020.
- "Quarter-Two Three Forums, discussion regarding the state of Warlords Battlecry 3's source code". Archived from the original on 2015-06-02.
- "The Gibberlings 3 Forum discussion regarding the state of Warlords Battlecry 3's source code". Archived from the original on 2014-05-29. Retrieved 2014-08-11.
- Unofficial Patches Archived 2014-07-02 at the Wayback Machine on patches-scrolls.de
- links to prominent mods and unofficial patches for WBC3 Archived 2014-08-12 at the Wayback Machine on gog.com (2014)
- license Archived 2016-07-21 at the Wayback Machine on github.com/codeka
- shutting down Archived 2016-07-21 at the Wayback Machine "The game had about 45,000 downloads in total. At its peak, there were about 2,000 7-day active players and I was making around $150 per month."
- war-worlds-is-shutting-down Archived 2016-03-03 at the Wayback Machine on war-worlds.com
- wwmmo Archived 2016-07-21 at the Wayback Machine on github.com
- "Capstone Source Archive". Lesbird.com. Archived from the original on 2015-06-21. Retrieved 2015-06-21.
- Silkworm Archived 2017-03-23 at the Wayback Machine on worms2d.info
- Deadcode Archived 2017-03-23 at the Wayback Machine on worms2d.info
- Updates_(Worms_Armageddon) Archived 2017-03-23 at the Wayback Machine on worms2d.info
- "Community Coder Program!". goldhawkinteractive. Archived from the original on 2015-07-10. Retrieved 2015-07-09.
- "What is Xenonauts: Community Edition & how do I get it?". goldhawkinteractive.com. Archived from the original on 2015-07-10. Retrieved 2015-07-09.
- xiii_unrealscript on GitHub
External links
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Wikimedia Commons has media related to Free video games. |
- Game Source Code Collection at the Internet Archive
- Liberated Games, specialized on open sourced computer games (archived; from 2015-07-26)
- Open Source Game Clones, specialized in open source variants of commercial games
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