This is a gift, not a key. I will send the game via steam to your email. You'll see notification on steam or your email. Usually it works pretty well, no trouble whatsoever. But last winner said he didn't get notification, and re-sending the gift became troublesome. Luckily the gift before was tradable.
But this gift is not tradable yet, so enter with your own risk. Please comment if you win, i'll send the game after that.