I would say Skyrim. Despite it's flaws, it was still easily the most entertaining experience I had on any console this gen. It may have more problems than many games, especially on the PS3, but that didn't stop it from being ridiculous fun.

25 Assassin's Creed II

24 Metal Gear Solid: Peace Walker

23 The World Ends With You

22 Uncharted 3: Drake's Deception

21 Gears of War

20 Grand Theft Auto IV

19 Xenoblade Chronicles

18 Batman: Arkham Asylum

17 The Legend of Zelda: Skyward Sword

16 God of War III

15 Fallout 3

14 Portal 2

13 The Elder Scrolls IV: Oblivion

12 Super Smash Bros. Brawl

11 BioShock

10 Super Mario Galaxy 2

9 Batman: Arkham City

8 Red Dead Redemption

7 The Legend of Zelda: Twilight Princess

6 The Elder Scrolls V: Skyrim

5 Mass Effect 2

4 Call of Duty 4: Modern Warfare

3 Metal Gear Solid 4: Guns of the Patriots

2 Super Mario Galaxy