My buys were Dungeon Defenders, Batman: AC, and Civ 5. I've never played a Civ game before, but I'm really enjoying it. It also helps that the fianceé is the one who convinced me to buy it; she used to love Civ III and when we played a game with a friend this weekend she was hooked. It's a godsend since I've been searching forever for a game that she actually wants to play with me. The other two games are also lots and lots of fun.
I'm enjoying it as well. I've gone through three matches so far, which is actually quite a lot when you consider I play on Huge maps with the Marathon game setting. Each match takes about 15 hours total to complete. There are so many different ways you can focus your attention to win that it takes a long time to get old. My only complaint is that on the really large maps, by mid-game it starts to take a long time to process the NPC player actions between turns.
I won my last match with a diplomatic victory but I saved right before I completed construction on the UN so I can reload and win with a cultural victory. Meanwhile, Catherine of Russia is flaming me for being a bully because I have 15 Giant Death Robots lined up on her borders. She never should have denounced me for being friends with Polynesia in 270 AD.