What's your favorite PC game? Mine used to be Combat Arms (Until I quit when the hacks got patched), now it's Crysis.
Sorry to burst your bubble, but this belongs to the "Gaming Discussion" section. A mod should move this once he sees it. On topic, I don't play PC games, but I used to play Counter Strike when I was younger.
Killing floor, Garry's Mod, Counter strike source, cod 4.... I really love the fact I can play all of these but KF on my mac (I love internet peepz who can hack games to make em work on another OS)
RollerCoaster Tycoon 1&2 (plus expansions) ... i still play RCT2. Civilization IV (plus expansions) Quake III - Arena Elder Scrolls III - Morrowind