My favorites:
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1992: Indiana Jones and the Fate of Atlantis

1992: Special Forces

1993: Battle Isle I

1994: Doom II

1995: Mechwarrior II (Multiplayer)

1996 - 1997: Duke Nukem 3D (Multiplayer)

1997 - 1999: Quake II (Multiplayer)

2000 - 2002: Unreal Tournament '99 (Multiplayer)

2000 - 2003: Quake III Arena (Multiplayer)

2000 - 2005: Quake III Rocket Arena (Multiplayer) ♥♥♥

2002: Dungeon Siege I

2003 - 2005: Wolfenstein Enemy Territory (Multiplayer) ♥♥

2003: Star Wars Knights of the old Republic

2005: Dungeon Siege II

2011: Dead Space II

2011: Left 4 Dead II (Multiplayer)