Wicked-ass FPS (first-person shooter). Certainly my favorite. A lot of people like FPS games with more to them than just "shoot 'em up" like, for example, CounterStrike. But I dunno, I really like QuakeIII because I can come home, plonk myself down in front of my box and play for like 5 mins.. it's not something that has to take hours. QuakeIII is probably one of the most polished and fast-paced FPS games out there. It kicks righteous ass.