The survival adventure game The Flame in the Flood is free for a limited time through the Humble Store. The game normally costs 14.99 euro but for the next 48 hours you can get it for free.
To get the game, just go to The Flame in the Flood page on the Humble Store, and click "Add to cart" then "Checkout". After that click "Get it for free." Once you get the game, it will be yours forever. The offer ends on Saturday, May 12 at 10 a.m. PT. But be careful, because the keys cannot be redeemed after May 26.