Must activate immediately. (by March 21st) - Please mark as received. I get nothing for giving it away, it was free!
This was free from Humble Bundle, you can get one there with all the DLC, or enter to win here.
Already had it, so giving it away. Good luck! (But really, you can get it free for the next 24 hours anyway!
Did I mention you can get this for free on Humble store?