Name 10 games that defined the generation

[foodfather]

10. Insert indie XBLA title here - Castle Crashers, Braid, Fez, Supermeatboy, Geometry Wars
9. Portal
8. Elder Scroll Oblivion
7. Assassins creed
6. Uncharted 2
5. Halo 3
4. Bioshock
3. Mass Effect 2
2. Gears of War
1. COD4