When I first got back into gaming, I went to GameStop to look for some games and I bought Madden 07 and NBA 2K7. I played NBA 2K7 a little, got a few achievements, but I knew it wasn't really a game that I would ever get good at. There may be a few achievements that I will still try to get on it.
I bought 2K11 because I was interested in the Jordan Challenge. I have yet to even start playing it. I should probably start it soon to get the simple online achievements. I would've considered 2K12 if they had Allen Iverson in it, but since they didn't, I won't be getting it. I'd have to see something special in 2K13 to get that one.