Quake 3 Fortress is based on the classic and all-time popular Classic Quake class-based mod, Team Fortress. The mod offers primarily team based capture the flag type gameplay, but this new version also gives you some slight twists such as "capture and hold" games - where you try to hold on to the "flag" (it's actually a duck) for as long as possible without getting killed. The longer you hold on to the flag, the more team points you get.
Version 1.0b1G resolves issues where people would get banned from servers for no reason.
Quake III Arena.