I recently just bought the Fallout Series special on steam. It includes Fallout 1, Fallout 2 and Fallout tactics. God I love the fallout series. I played weeks on Fallout 3 and Fallout New Vegas. The post apocalyptic theme is so cool to work around. Survival is key.
Mario Kart 8 for the Wii U - at least for right now. There is barn sale going on over on Gamestop's site so... yeah. I am eying quite a few games over there.
The last game I bought was GTA V for PS3. I don't always buy physical media and instead I just use my existing library to trade with my circle of friends as possible, but I opted to buy a copy of my own for this game even though a lot of my friends already had it and I could easily just have traded for it or borrowed it, but I was very happy with this purchase because I think GTA games are very well made and certainly a great addition to my miniscule library.