Unreal Tournament, UT, (sometimes referred to as UT99 or UT Classic or UT1 and also UT:GOTY to differentiate from Unreal Tournament 2003, Unreal Tournament 2004 and Unreal Tournament 3) is a popular first-person shooter video game. It is Epic Games's 1999 follow-up title to Unreal and focuses mainly on multiplayer action. It was launched in direct competition to id Software's Quake III Arena which was released 10 days later. Although Quake III Arena had slightly better graphics, streamlined gameplay and a widely adopted engine, UT had superior bot AI, "alternate fire" for weapons which introduced a further element of strategy, and a larger variety of multiplayer capabilities.
As with the original Unreal, the ease with which players can create and release mods to the core game is a key factor contributing to UT's longevity. UT improved upon the mod-friendly nature of its predecessor with support for mutators such as Sniper Arena, Instagib, BunnyTracks, MonsterHunt, Jailbreak and more. Further, UT "Clan", or gaming teams, and a score of UT dedicated clan and fan community sites continue to sustain Unreal Tournament's popularity even over half a decade after its initial release.