Remember Amnesia Fortnight, the internal game jam that has all Double Fine employees setting everything aside to create a game in just two weeks, and which was recently busted wide upon, for the public eye to gaze upon?
The end result was a number of games that will (presumably) be developed into full-fledged games at a later point. But if you're interested, you can play the prototypes right now, via the Amnesia Fortnight 2012 Special Edition:
For $30 there’s a two-disc set. Included are the five Amnesia Fortnight 2012 prototypes: Autonomous, Black Lake, Hack 'n' Slash, Spacebase DF-9, and The White Birch. Plus, one will also receive the official soundtrack, the 2 Player Production's documentation of the entire game jam, and several bonus prototypes from past fortnights.
For $15 extra you get everything above, plus a cover based upon one of the games, which is also signed by it project lead. And for $70, you get signed covers for all the games. But for those who just want the content, there's the $9.99 digital option, which has just the games, music, and documentaries, all DRM free.