The Raspberry Pi Foundation has released OpenArena – a multiplayer first person shooter game based on Quake III — for the Raspberry Pi. Available as a free download, the game has been rated 'Adults Only' because of the blood and guns. The open-source game is powered by the 'ioquake3' fork of the engine that Quake III runs on – id's Tech 3 engine. Modifications have been made to the gameplay by removing the copyrighted material and adding new free content.

http://games.slashdot.org/story/13/0...n-raspberry-pi