Urban Terror, commonly abbreviated as UrT, is a free multi-player first person shooter game developed by FrozenSand. Originally a total conversion of id Software's Quake III Arena, FrozenSand released Urban Terror as a free standalone game in 2007 utilizing ioquake3 as an engine.[1] Although the ioquake3 project uses id Software's id Tech 3 engine under GPL license, Urban Terror's assets …