Jeez 5, that's impossible >_>
Oh well...
5. COD4 - most addictive multiplayer ever. Single player was amazing too. I've probably played it more than anything else.
4. SSBB - It could have been higher if the online wasn't so terrible. Other than that its top notch, and possibly my favourite fighter ever.
3. GTAIV - I totally had a boner for this when it first came out, but now it's worn off on me a bit. Still deserves its place.
2. Mario Galaxy - Former second favourite game on any console in any generation. Nothing needs to be said about this. When the generation is over we'll remember it as one of the defining games and a true classic.
1. MGS4 - It absolutely blew me away. I'd never imagined a game being impressive on this level. I hated every other MGS, so perhaps going in with such low expectations made it seem that much better.
Whatever, I firmly believe that is the greatest game of all time. I don't think anything comes close really. A masterpeice.
Honourable mentions to Metroid and Mario Kart.
