We were lucky to recieve many good games for free during different giveaways (you can view the history here).
And it made me think: which one of all those games appeared to be the best for you? Maybe it's something you were wishing for since a while, or something new that you enjoyed playing?
As for me, I'd have to say it's GRID. I've heard about it before, and it was a pleasure for me to discover it.
And which given away game was like a treasure for you?