Pick one, this whole list is made of classics:
Ace Combat (ARC; 1992)
Age of Empires (PC; 1997)
Asheron's Call (PC; 1999)
Baldur's Gate (PC; 1998)
Banjo-Kazooie (N64; 1998)
Battletoads (ARC; 1991)
Civilization (PC; 1991)
Command & Conquer (PC; 1995)
Crash Bandicoot (PS1; 1996)
Chrono Cross (PS1; 1999)
Cruis'n (ARC; 1994)
Diablo (PC; 1996)
Donkey Kong Country (SNES; 1994)2
DOOM (PC; 1993)
Duke Nukem (PC; 1991)
Dungeon Keeper (PC; 1997)
Earthworm Jim (SGA; 1994)
The Elder Scrolls (PC; 1994)
EverQuest (PC; 1999)
Fallout (PC; 1997)
Fire Emblem (Famicom; 1990)
F-Zero (SNES; 1990)
Gabriel Knight (PC; 1993)
Gran Turismo (PS1; 1997)
Grand Theft Auto (PC; 1997)
Half-Life (PC; 1998)
Harvest Moon (SNES; 1996)
Heroes of Might and Magic (PC; 1995)...