It was another tough year to choose from, but I spent so much time in Borderlands 2. I'd say Guild Wars 2 followed by Mass Effect 3 after that. Then probably The Walking Dead just because of the story alone.
My Wii collects dust. Last game I played was No More Heroes, and I don't think I've turned on the system in two years. I'd probably consider a Wii U if Xenoblade Chronicles got re-released for the Wii U as a digital download and some extra features.
It's just that simple.