Free Games
Free games are video games which are free software and contain exclusively free content. Because of this they are freely distributable and often cross-platform compatible. Many are included in Linux distributions as a result. Free games are open source software, but not all open source games are free software; some open source games contain proprietary non-free content. In general free games are developed by small groups of people in their free time, without aiming for profit. Some free games are based on formerly proprietary projects, whose source code was released as free and open source software and game data as free and open content. An example is Warzone 2100.