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OpenArena is a free and open source 3D computer game that belongs to the "first-person shooter" genre. OpenArena had its first public test release on August 19 2005, the day after the id Tech 3 GPL source code release and also the last day of Quake Expo 2005.

OpenArena is being developed using mainly free and open source software. For instance, its game engine is id Software's GPL id Tech 3. OpenArena is entirely free as in speech. The game engine, game code and data are all free and open content. It is still in very early development. In addition, a "missionpack" add-on is planned, to take advantage of the GPL'd Quake III: Team Arena source code.

OpenArena's gameplay is the exact same as Quake III Arena - score frags to win the game using a balanced set of weapons each designed for different  situations. Gameplay modes exist such as deathmatch, Team Deathmatch, Tournament, and Capture The Flag (all modes also in the original game). Bot support was added in version 0.6.0. OpenArena has undergone compatibility testing with some Quake 3 mods. A list of tested mods can be found here  Open Arena does not have a set story line. The models do not follow a set theme with some being military, fantasy, or oriental themed.

System Requirements:    

Pentium 166 MHz processor, 64 MB of RAM, 8 MB video card with OpenGL acceleration

Input methods:     Keyboard and Mouse