In an unprecedented move, the Humble Bundle has teamed up with Nintendo to offer Wii U and Nintendo 3DS games (redeemable on the eShops) for whatever price you want.
The Humble Nindie Bundle lets you pay whatever you want for Guacamelee! Super Turbo Championship Edition, Woah Dave!, and Mighty Switch Force. Pay more than the average price, and you'll also get The Fall, OlliOlli, and Moon Chronicles. Pay $10 or more, and you can get all of that plus Stealth Inc 2 and SteamWorld Dig.