Tremulous is an open source team-based FPS (first person shooter) with a game play that is similar to Gloom (a Quake 2 mod) and Natural Selection (a Half-Life mod). The game features two teams, humans and aliens, each with their own strengths and weaknesses. The game has been downloaded over 200,000 times and was voted “Player’s Choice Standalone Game of the Year” in Mod Database’s “Mod of the Year” 2006 competition.
Get the game here... http://tremulous.net/
From: Gamesuy