Hisiru on 26 January 2010
1° Gears of War (this game made me buy a x360)
2° Halo 3
3° Forza Motorsport 3
4° Mass Effect
5° Left 4 Dead 2
6° Ballad of Gay Tony (it's better than GTA4 in my opinion)
7° Gears of War 2
8° Lost Odyssey
9° Crackdown (good campaign and great online, I can't wait for Crackdown 2)
10° Condemned: Criminal Origins (it's the best survival horror this generation IMO)
Urgh, this should be a top 15 or top 20, there are so many good games that I could put. 
