Action RPGs:
1) Divine Divinity
2) Diablo2
3) Diablo1
RPGs
1) Baldur's Gate 2
2) Baldur's Gate
3) TES: Daggerfall
4) Knights of the Old Republic
5) TES: Arena
Special mention to Vampire the Masquerade: Bloodlines, an good underrated game hampered by the fact that the company who made it was dying.
