I didn't purchase all that much this year. Picked up Fallout 3 Las Vegas, LA Noire. I did get Limbo for free and I've been enjoying that one the most.
I also bought Duke Nukem for $5. It's a shame it sucks so much. There are too many good shooters out there now, so this falls to the bottom of the pile. A great game makes me play till 3am on the first night, not stop playing less an hour after starting