Star Raiders

Like the text-based Star Trek games, in Star Raiders the player's ship maneuvers about a two-dimensional grid fighting a fleet of enemy spaceships.[3][4] In Star Raiders, this part of the game takes the form of a "Galactic Chart" display dividing the game's large-scale world into a grid of sectors, some of which are empty, while other are occupied by enemy ships or a friendly "starbase". The Galactic Map is the equivalent of the earlier Star Trek's Long Range Scan.

Flying about in the 3D view with the ship's normal engines is sufficient for travel within a sector; travel between sectors is via "hyperspace", accomplished through an elaborate and noisy "hyperwarp" sequence with graphics loosely reminiscent of the Star Wars and Star Trek films in which the stars seemed to stretch to radial lines. On the higher difficulty levels, hyperwarp has a skill element; the player has to keep a wandering cross hair roughly centered during the sequence in order to arrive precisely at the desired destination.

Two Zylon fighters attack. Below the crosshair is a Patrol ship. A Fighter is in the upper right.

To the Star Trek formula, the game added real-time 3D battles[3] as a space combat simulator. In the main first-person display, the player can look out of the ship and shoot "photons" at Zylon ships, which come in three different varieties reminiscent of ships from Star Wars, Star Trek, and Battlestar Galactica (whose villains were the similarly titled Cylons).[5]

A small targeting display in the lower right corner gives a general indication of a distant enemy or starbase's position relative to the player's ship, and also indicates when weapons are locked on the enemy, at which point the player's weapons will fire two torpedoes simultaneously. There is also a "long-range scan" screen showing the surrounding region in a third-person overhead view centered on your ship, operating like a long-range radar display.

Enemy ships come in three types. The standard Fighters resemble the TIE fighter.[5] The Patrol ships, which do not fire until fired upon, loosely resemble the front-on view of a Cylon Raider or Klingon Battlecruiser. The most powerful Zylon ship, the Basestar, has a pulsating orange glow and resembles a Cylon Basestar. It also has shields, which protect it from incoming fire, thus requiring the player to either hit it multiple times in rapid succession at close range or get it into a Target Lock, which results in two torpedoes being fired simultaneously and tracking the target until impact.

The game has four difficulty levels; on all but the lowest "Novice" level players must steer the ship into hyperspace and collisions with random meteoroids and enemy fire can cause damage to the player's ship.[6][3] Such damage includes malfunctioning or nonfunctional shields, engines, weapons or information displays. Any collision when shields are down destroys the ship and ends the game. Running out of energy likewise ends the game.

The player has to manage finite energy reserves as well as damage to the ship; it can be repaired and restocked by rendezvous with a friendly starbase.[5] The enemy can also destroy a starbase if allowed to surround its Galactic Chart sector for too long, so the starbases have to be defended. All this lends Star Raiders a degree of complexity and a sense of player immersion that was rare in action games of the era.

In contrast to many games of the era, the player can actually win the game by destroying all enemy ships in the galaxy. However, there is no running score display; only upon winning, dying or quitting the game will the player receive a "rating", which is a quasi-military rank accompanied by a numerical class with particularly bad play earning a rank of "Garbage Scow Captain" or "Galactic Cook". The rating depends on a formula involving the game play level, energy and time used, star bases destroyed (both by player or the enemy), the number of enemies destroyed, and whether the player succeeded in destroying all enemies, was destroyed, or aborted (quit or ran out of energy) the mission. Some possible ratings reach from Rookie to Star Commander.

Atari 8-bit computer cartridge; early releases had a typo on the label: Star Raider.

The main simulation continues running even when the user is interacting with other displays. For instance, one might be attacked while examining the Galactic Map. This was unusual for the time, if not unique.[4]

The primary playfield/star field is drawn in the graphics mode that provides 160×96 bitmapped pixels utilizing four color registers at a time out of a palette of 128 colors provided by the CTIA chip in the early Atari computers. This is called ANTIC mode D,[9] but accessed in Atari BASIC by use of the "GRAPHICS 7" command. The Atari's use of an indirect palette means that color changes associated with the presence or absence of energy shields, emergency alarms, and the screen flash representing destruction of the ship can be accomplished by simply changing the palette values in memory registers.

Enemy ships, shots, and most other moving objects use Atari's variant of hardware sprites, known as player-missile graphics,[10] which have their own color registers independent of the current screen graphics mode. The radar display in the lower right of screen is drawn using the background graphics, and updated less frequently than the sprites.

The debris particles emitted when an enemy ship is destroyed are calculated as 3D points. Since the 6502 processor in the Atari 8-bit family does not have a native multiply or divide command, the game slows down considerably when several of these particles are active.[4]

The Atari 8-bit family allows different graphics modes and color palettes to be used in different horizontal bands on the screen, by using a simple display list and a type of horizontal blank interrupt. While other games make more extensive use of these techniques, Star Raiders uses them in a relatively simple fashion to combine text displays and graphics; the cockpit display uses a custom character set to display futuristic-looking characters and symbols reminiscent of MICR.

Star Raiders' sounds of engines, shots, explosions, alarms, etc. are algorithmically synthesized directly using the POKEY sound chip's capabilities. Neubauer was involved in the design of POKEY.[4]

The entire game, code and data, fits into 8K (8192 bytes) of ROM, and requires only 8K of RAM for its working data and display visuals; thus it can run on any Atari 8-bit computer.

The Star Raiders II that was released in 1986 by Atari Corp. had no relationship to the original other than the name, and was, in fact, merely a rebranded game originally developed as a licensed tie-in for the movie The Last Starfighter.

In 2015, Kevin Savetz, host of the ANTIC Podcast, was contacted by former Atari, Inc. programmer Aric Wilmunder. Wilmunder mentioned he had been part of a team working on 8-bit computer games and decided to make a sequel to Star Raiders.[25]

This version of Star Raiders II is faithful to the original gameplay, but designed to make use of new 32 kB cartridges. The torpedoes were replaced with a laser-like weapon that can be aimed semi-independently of the ship's motion. The enemies are now 3D wireframe ships instead of 2D sprites. The gridded galactic map was replaced with a free-form version. In this rendition, the player's home planet is in the upper left of the map, and the enemy ships are ultimately attempting to attack it. A number of planets can also be attacked on the surface in a view based on the Star Wars arcade game, which was being developed down the hall from Wilmunder's office.[25]

The main part of the game was complete by early 1984, but Atari was in disarray and undergoing a continual downsizing. Eventually, he was laid off, but kept the source code when he left. He later unsuccessfully tried to interest the new Atari Corporation in the project.[25]

The game, in an untuned but functionally complete and playable state, was added to the Internet Archive along with basic documentation and Wilmunder's telling of the history of the game.[26][27]

A re-imagining of Star Raiders, developed by Incinerator Studios and published by Atari SA, was released for the PlayStation 3, Xbox 360 and Microsoft Windows on May 11, 2011

Many games heavily inspired by Star Raiders appeared, such as Starmaster (Atari 2600), Space Spartans (Intellivision), Moonbeam Express (TI-99/4A),[28] and Star Luster (Famicom–Japan only).[5] Neubauer's own Solaris, for the Atari 2600, is both similar and in some ways more sophisticated than his earlier game, despite the difference in technology between the two systems.[5]

Star Raiders inspired later space combat games like Elite, the Wing Commander series and BattleSphere.[5]

Star Rangers, an homage to Star Raiders, was released in 2010 for the iPhone. It was written by former 8-bit game programmer Tom Hudson, who was at one time a technical editor for Atari hobbyist magazine ANALOG Computing. As of October 2014, possibly earlier, Star Rangers is no longer in the iOS App Store.

In 1983 DC Comics published a graphic novel inspired by the game; it was the first title of the DC Graphic Novel series. It was written by Elliot S! Maggin and illustrated by José Luis García-López. Early production copies of the Atari 2600 version of the game were accompanied by an Atari Force mini-comic (published by DC Comics). This particular issue was #3 in the series, preceded by mini-comics accompanying the Defender and Berserk games. Two final mini-comics followed with the games Phoenix and Galaxian.

A scan of the original assembly language source code became available in October 2015 via the Internet Archive.[29] It was used to create a text-file version in GitHub.[30]