Every time I see one these lists, I'm at a loss to even recall which game I've played this year (that were also released this year). Of the ones you've listed, I've only played Witcher 2, SPAZ and Shogun 2, and while I thought they were all ok, none of them really grabbed me. I'm kind of sad in the case of Witcher 2, since I really wanted to like it, and while I do kind of like it, I still haven't finished it. After a couple of hours, I just start getting bored with it, and eventually quit for a month or two, after which I try picking it up again.
Anyway, I did manage to recall at least some of the games I played and liked this year, and I guess I'd put Portal 2, Frozen Synapse and Fate of the World on my own list, were I to make one. Gemini Rue was pretty good, too.