Celebrated indie studio Double Fine Productions is the latest to get in on the pay-what-you-want action of the popular Humble Bundle promotions, with the Humble Double Fine Bundle now available over on humblebundle.com.

Pay what you want and get the beloved and hilarious platformer Psychonauts; the matryoshka doll epic adventure Stacking; and the adorable adventure/RPG Costume Quest. If you pay over the average, you'll get the heavy metal action/adventure/RTS rocker Brütal Legend. You'll also become a slacker backer of Double Fine's Kickstarter point-and-click adventure game, Broken Age, with a purchase of $35 or more and receive the finished game and bonus content that comes with it! And if you pay $70 or more you'll receive a limited edition Double Fine T-shirt (choose from two color options) in addition to everything else! Additionally, this bundle includes tons of soundtracks that will have your ears jumping for joy!

Impressively, all titles in the bundle will run on Windows, Mac and Linux, and are free of any DRM copy-protection.

Like other Humble promos, the choice of how the funds are distributed between the developer, the Child's Play charity, and the Electronic Frontier Foundation is left to the customer. Watch the amusing and informative trailer below.