Urban Terror is described as 'Started as a realism based "total conversion" mod for Quake III Arena. Nowadays, Urban Terror is played using the free, stand-alone, ioquake3 engine modified, which doesn't require Quake III Arena, in addition to being an add-on to id Software's' and is a first-person shooter in the games category. There are more than 25 games similar to Urban Terror for a variety of platforms, including Windows, Linux, Mac, Steam and Playstation apps. The best Urban Terror alternative is Xonotic, which is both free and Open Source. Other Urban Terror like games are Counter-Strike, Team Fortress 2, Unreal Tournament and Quake.
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A free-and-open-source first-person-shooter aimed at improving the classic game, AssaultCube!
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