The fifth incarnation of the Humble Bundle is out, and delivers the most critically-acclaimed lineup of games yet. Pay what you want for Steam keys and DRM-free downloads of Amnesia: The Dark Descent, Psychonauts, LIMBO, Superbrothers: Swords and Sworcery EP, and  OSTs for all games in FLAC and mp3 formats. Spend more than about $7.50 and get Bastion and its OST as well.