Don't buy any Halo game except for the first one as they all suck horribly. Also don't buy and Geard of War games either, as they suck as well. Do however buy Bioshock and hell, even Bioshock 2, not as good as the original but not awful. Oh, and ofc Battlefield Bad Company 2 for the fantastic online multiplayer. At least 10 times better than COD in my opinion.