I've heard Torchlight 2 is great. Looks like Diablo so I've wanted to pick it up but I don't really need anymore games, myself.
I picked up XCOM: Enemy Unknown and that was actually a very good, very fun game. Not too much as far as story goes but it's definitely very interesting and the game play is immensely addicting.
Tropico 4 was also a great city building game. Pretty simple, not too difficult to get into, and the campaign missions kept the same premise a little more fresh.
CS/CpE. Yay engineering!