Wow, this is a tough one. It seems 2011 is going to be a great year for games. Anyway, my choices would be:
1.)Shogun 2
2.)Assassin's Creed Brotherhood
3.)Either Battlefield 3 or Dead Island
Regarding number 3, Dead island has only released a few details but it sounds awesome already PLUS who didn't like that AWESOME trailer hey? Battlefield 3 hasn't really given any big details, it seems pretty cool but maybe it's just because of my grudge against fucking Call of Duty. Actually, if I think about it, I'm getting a bit sick of so many serious "hardcore" shooters on the market. Maybe I'll choose something else instead...