I'm a bit torn, as I've really enjoyed this year's titles. Sleeping Dogs, Spec-Ops: The Line, Hotline Miami, CS:GO and several others.
It's really hard to say which ones I've enjoyed the most as they were all great for very different reasons. While I wasn't overly fond of the slightly accusatory tone of Spec-Ops and HLM (since they forced me to do the killing), I did like how they made me think about -why- I enjoy violence in media. Yes, they're not real people, but that's what they're kind of meant to represent, so what does it say about me when I enjoy watching them burst like meat balloons? I think it's acceptable as entertainment, but I have to wonder what it is inside us that makes it entertaining and even cathartic to make or watch made-up people die.
Sleeping Dogs might be my favourite urban open-world game ever. The combat was stolen from the Arkham games, yes, but it was so much more satisfying, in my opinion. The driving felt really nice and ridiculousness of cars flipping over and exploding when you shoot the tires out was just stupidly fun. The story surprised me, too. It wasn't award winning stuff, to be sure, but it was engaging enough. I liked the characters and I found Wei's subtle internal struggle between relating to the gangsters and being disturbed by his actions quite interesting. Some of the final act was a bit weak, but somehow very satisfying. Without spoiling it, getting revenge in the last couple of missions was very satisfying even if it was slightly ridiculous. The game was really quite funny, too.
CS:GO is just one of the intense multi-player experiences I've had. I never played the original and most of the players on Source were waaaay beyond my skill level so it was just frustrating. The idea of death being relatively final just makes the game so tense, especially when you're the last one alive and you have no idea when someone might just burst around the corner and end you. That's some survival horror shit, right there.
I really need to buy XCOM and Dishono(u)red as well, they look fantastic.