I won't include multiplatform games that I played on X360 and doing a top 10 even if the bottom 5 don't get points.
10. Little Big Planet
9. Burnout Paradise
8. Dead Space
7. Valkyria Chronicles
6. Marvel vs Capcom 3
5. God of War III
4. Uncharted 2
3. Metal Gear Solid 4
2. Batman Arkham Asylum
1. Street Fighter IV
Some of those would be in my top 10 for the whole generation across PS3,360 and Wii and I had to do a top 10 because Valkyria Chronicles, MvC 3 and Dead Space are all fantastic games in my opinion.
Edit: forgot about Burnout Paradise which was lots of fun. Heavy Rain gets dropped and Burnout moves to number 9.
XBL Gamertag: ckmlb, PSN ID: ckmlb