Here's what I got so far and short reviews:
X-COM: Enemy Unknown - Really fun, I like the way they simplified it. I've restarted a few times to better design/optimize my base and squad but don't mind.
Far Cry 3 - Kind of a letdown, you have to sign up for something called U-Play to launch the game and some server was down so I couldn't get into the game when trying to create an account through Steam. There's a bit too much dog skinning so far for my taste and the story/setting isn't that interesting. Also super dumb AI on normal setting. Far Cry 2 had good atmosphere but I still like the first one best as far as crazy story/action.
http://youtu.be/cdEQmpVIE4AFar Cry 3: Blood Dragon - Awesome, funny dialogue, 8-bit cutscenes and tutorial. A bit too easy though, same dumb AI as FC3 but das ok here because the story and all the little details they put in are great.
The Witcher - haven't installed
The Witcher 2 - haven't installed, probably won't have enough time to play either of these games but was only a few bucks so had to get.