Katilian on 05 March 2008
For PC, I assume you are counting LAN coop games, since split screen has never been big. A few to add (in no particular order):
Serious Sam 1 + 2
Doom 1 + 2
Quake 1 + 2
Gears of War
Ghost Recon
RavenShield
VietCong
SWAT 4
Full Spectrum Warrior
Operation Flashpoint
GRAW
Diablo 1 + 2
Nox
Dungeon Siege 1 + 2
Neverwinter Nights 1 + 2
Icewind Dale 1 + 2
Baldur's Gate 1 + 2
Ground Control 2
Age of Empires Series
Delta Force Series
Alien vs. Prediator 1 + 2
