Turn-based tactics

Individual units are commanded to perform military tactics such as an ambush. Screenshot is from Battle for Wesnoth.

The gameplay of turn-based tactics game is the stop-action counterpart to that found in the real-time tactics genre, and as such contrasts with other current wargame genres. For instance, in large-scale turn-based strategy games battles are generally abstracted and the gameplay close to that of related board games, and real-time strategy games de-emphasize realism and focus on the collection and conversion of resources into production capacities which manufacture combat units thereafter used in generally highly stylised confrontations. In contrast, turn-based tactics games' military tactical and realistic focus, emphasis on executing intricate and well thought through plans and comparatively short risk/reward cycle usually provide a distinctly more immediate, intense, careful and meticulous experience of battlefield tactics and mêlée than strategy games of other genres.

As suggested by the genre's name, also fundamental to turn-based tactics is turn-based gameplay. The genre has its roots in tactical and miniature wargaming, the recreation of battle scenarios using miniatures or even simple paper chits using relatively intricate rules. Compared to other strategy games, games of the turn-based tactics genre often have distinctly detailed and complex environments due to the tactical implications of elevation, hard cover and line of sight. Further, in most turn-based tactics games a player's force is maintained between battles. This allows units to become more proficient as they gain more battle experience and coupled with the often small and specialised squads used, can even encourage an affinity between the player and his or her troops, breaking down the stereotypical anonymity of the expendable, mass-produced units found in strategic games.

During the 1980s, as microcomputers and personal computers became more powerful and more common, game developers turned their attention to designing tactical wargames for them. Some early tactical wargames for the computer included Gary Grigsby's series of games for the Commodore 64 and Apple II: Panzer Strike (1987), and Typhoon of Steel (1988).

And the first time the system was properly built was the Fire Emblem: Shadow Dragon and the Blade of Light, which was launched in 1990.

Battle Isle is a series of games developed starting in 1991 by Blue Byte. Set on a fictional planet, Chromos, and inspired by the Japanese game Nectaris (1989), the games feature futuristic tactical battles played on a hexagonal grid. Players control combat units, ranging from infantry and tanks to helicopters, fighters and bombers; as well as (especially in the later games) support units, including ammo and fuel transports, scout and radar units, and road and trench construction vehicles. Battle Isle also spawned a man-to-man wargame, Incubation: Time Is Running Out (1997), an even earlier strategy title to use fully 3D graphics and support hardware acceleration on the 3dfx Voodoo.

Steel Panthers was released in 1995 by SSI, very much resembling a board wargame translated to the computer; it gave a traditional overheard view, though numeric ratings were not visible on the screen depictions. Two sequels followed; Steel Panthers II: Modern Battles in 1996 and Steel Panthers III: Brigade Command 1939-1999 in 1997. Rights to the game and source code were later acquired by Matrix Games who developed and released as freeware an improved remake based on the Steel Panthers III engine (but limited to the timespan of World War II); this was known as Steel Panthers: World at War! (SP:WAW). Another group, SP-Camo, developed and released Steel Panthers: World War II, and Steel Panthers: Main Battle Tank was released in June 2005. The SP-Camo games were based on the Steel Panthers II engine. Both the Matrix Games and SP-Camo versions had many fans and resulted in several releases with enhanced graphics, program code changes, and new unit types.

Another game originally scheduled to be a computerized Squad Leader/ASL was Combat Mission. While not the first 3-D tactical warfare game, it set an industry standard for realism, thanks to minutely detailed armor penetration modelling. There was no first-person element to the game, which placed a realistic burden of command on the player, and unlike earlier games like M-1 Tank Platoon or Muzzle Velocity, human intervention wasn't necessary to ensure that one's troops were capable of fighting with the same skill as the computer enemy. Combat Mission: Beyond Overlord received critical acclaim upon release in 2000. Two follow up games were released in 2002 and 2004, which improved the infantry game with better suppression and automatic fire modelling. The game featured a "WEGO" system, where orders were entered sequentially, and the turn was then executed simultaneously, with a "Tactical AI" carrying out both sets of orders. This type of system had been what the original board wargame designers of Firefight et al. had dreamed of, but were restricted to creating manually.