Id Software's November 1997 follow-up to Quake saw a whole new world and a whole new enemy, The Stroggs, with the same thin plot: kill them all! Quake 2 features hub-style worlds, colored lights, and many kinds of weapons and Stroggs.
Although SDA tried to host individual level Quake II speedrunning here in 1999-2000, it never achieved the popularity of the original game so it just sort of fizzled out. There are two very cool speedruns of the whole game available, though.