Battlefield 3: This game looks and plays amazing on my PC, but I put over 100 hours into Bad Company 2, which was so similar it just didn't feel right to take up a spot on my list with BF3. However, I still think this series has perfected large scale shooter combat, and I am sure to pour many more hours into it over the next couple years.
Dragon Age 2: Dragon Age 2 had the best story of the year for me, with characters that I ended up caring about a lot by the end of the game. Sadly, they rushed it out and sent the player to the same 5 or 6 dungeons for most of the 50 hour game, so I don't think it deserves a spot on the list. However, I enjoyed the combat much more than Dragon Age Origins, and I have thoroughly enjoyed both sets of DLC for the game.
Congrats to all the developers of the games on my list, I know you all worked really hard to impress me this year.