I have a copy of Botanicula (Windows, Mac and Linux) bought directly from the Amanita Design store. It's a Humble Store Page, that can be "claimed" if you have an account.
Feel free to join, random.org will decide the winner.
edit: oh, the giveaway is open till 5PM of monday, my time (too lazy to check which), I'll pick the winner ASAP. And yes, you can trans-donate the game :)
edit #2: the winner is uchristensen!