Point-and-click adventure game Deponia: The Complete Journey is free for a limited time through the Humble Store. The game normally costs 29.99 euro but for the next 48 hours you can get it for free.
To get the game, just go to the Deponia: The Complete Journey page on the Humble Store, and click "Get the Game". Once you get the game, it will be yours forever. The offer ends on Saturday, January 26 at 10 a.m. PT. But be careful, because the game cannot be redeemed after January 31.