Sample gameplay from Xonotic 0.5.0 with Ultra Graphics Settings in Ubuntu 11.04 Xonotic is a Free Open Source fork of Nexuiz, its a First Person Shooter (FPS) similar to Unreal Tournament and Quake 3. The game can be played online against other players or single player against bots. Its still in development, but this latest version 0.5.0 is perfectly playable. Xonotic is compatible with Linux, OS X and Windows. And can also be played on Desura Website: http://www.xonotic.org/ Download: http://www.xonotic.org/download/