Best Answer khh , 24 May 2015 - 13:14
Just go to this thread and follow the instructions to claim your humble page, which is where all the digital rewards are distributed. You can redeem the game to your Steam account from there (though you can also download it directly from Humble). If you want the game on GOG (in addition to Humble), you will have email email@example.com (send the email from the account you used when you pledged, and put GOG key in the title and include your backer info. The idea is that people get it either on GOG or on Steam in addition to Humble).
All digital rewards will show up on your humble page as they become available. If I recall correctly, there aren't any physical rewards at the $80 tier.Go to the full post