I don't know, Alan Wake was my favourite game i played this year but that came out in 2010. I liked:
Torchlight 2
Borderlands 2
FTL
Hotline Miami
The Secret World
Sleepy Dawgs
The Darkness 2
Guild Wars 2 - Although not the true love i wanted after gw1.
I haven't played the really big games of this year so no FC3, AC3, MP3 or Dishonoured.