Pay minimum $1.00 and get bonus soundtracks for Stick Fight: The Game, Rampage Knights and Tumblestone. Buy the highest tier and get $2 Humble Wallet credit (available only for Monthly subscribers!).
Pay $12.99 for Ashes of the Singularity and 8 DLC.
Pay $2.99 (before price increase) for 9 Steam games - 6 have Steam achievements!