Well here it goes, my top 10 all time favorite games:

1. Half Life
2. Duke Nukem 3D
3. Wolfenstien 3D
4. Halo 3 (Yes is is awesome)
5. Command and Conquer: Red alert 2
6. Dawn of War, and all addons
7. Starwars Galactic Battle Grounds
8. Rocket Knight (Mega Drive)
9. Wonderboy in monster land
10. Midnight resistance (Commodore 64)