Wargames are a subgenre of strategy video games that emphasize strategic or tactical warfare on a map, as well as historical (or near-historical) accuracy.
The genre of wargame video games is derived from earlier forms of wargames. The games thematically represent the wargame hobby, although they tend to be less realistic in order to increase accessibility for more casual players. The amount of realism varies between games as game designers balance an accurate simulation with playability.
The computer gaming industry generally evolved with minimal reference to board games, so the term "wargame" is not traditionally used in the context of computer games. However, the wargaming community saw the possibilities of computer gaming early and made attempts to break into the market, notably Avalon Hill's Microcomputer Games line, which began in 1980 and covered a variety of topics, including adaptations of some of their wargames.
In February 1980 Strategic Simulations, Inc. (SSI) was the first to sell a serious, professionally packaged computer wargame, Computer Bismarck. It and Strategic Studies Group (SSG) were computer game companies that continued the genre by specializing in games that borrowed from board and miniature wargames. The companies enjoyed a certain popularity throughout much of the 1980s and into the 1990s. TalonSoft started in 1995 with a similar focus, until purchased and later closed down by Take-Two Interactive in 2002.
The popular direction of the current market is towards real-time strategy games exemplified by StarCraft and others. These games are strategic in the gaming sense, but tactical in the military sense. These are generally high-action games that include a number of conveniences that enhance gameplay, but ignore reality.
The primary gameplay mode in a wargame is usually tactical: fighting battles. Wargames sometimes have a strategic mode where players may plan their battle or choose an area to conquer, but players typically spend much less time in this mode and more time actually fighting. Because it is difficult to provide an intelligent way to delegate tasks to a subordinate, war games typically keep the number of units down to hundreds rather than hundreds of thousands.