Your top 10 games ever played (stick to 10!)

[Kwal]

1. Unreal Gold
2. Warband
3. Ultima series
4. HOMM 1-4 (especially 4, bite me)
5. TES 3-5 and Fallout 3
6. Diablo 2
7. Baldurs Gate series
8. Mass Effect
9. Half Life 1 and 2
10. Soulbringer

I'd like to add a lot more vintage games, but they are mostly nostalgia Also, how can you prefer Diablo 1 over 2?