I didn't get to play that many game's in 2009. However I plan to change this in 2010 (still can't decide whether to say two thousand and ten or twenty ten). Anyway of the game's I did play, these are my favourite's.
Street Fighter IV and FIFA 10 for the 360.
Bowser's Inside Story for the Ds.
I didn't get a single game for my Wii, which is kind of criminal I know, but nothing really stood out for me except an occasional virtual console download. That is, nothing except New Super Mario Bros. Wii stood out for me and I will definitely be getting this game soon.
I don't have a Ps3 but thank's to some very generous family member's at Christmas I now have the means to be able to get one. The thing is though, I'm not sure if I really need one. I'm trying to think of the game's exclusive to the Ps3 which would convince me to get one.
Anyway these are my favourite game's of 2009, not too many but like I say I plan to play a lot more in 2010.