As always with this kind of list, just off the top of my head and subject to change.
1. Final Fantasy 3 (SNES)
2. Warcraft: Orcs and Humans (PC)
3. The Legend of Dragoon (PSX)
4. Dungeon Keeper (PC)
5. Mario RPG (SNES)
6. The Legend of Zelda: Ocarina of Time (N64)
7. Red Faction (PS2)
8. Chrono Trigger (SNES)
9. Time Splitters: Future Perfect (PS2)
10. Super Ghouls 'n Ghosts (SNES)