Dungeons of Dredmor (our favorite indie game of 2011, if you'll recall ) has fresh DLC. It's $3, and with the irreverence we'd expect, it adds a pile of absurd skill trees (Banksterism, Paranormal Investigator, Magical Law) and features (item storage in pocket dimensions, graffiti, Diggle Hell, equipment "Encrusting") into the game that domesticated the roguelike.
A list of new features and content, courtesy of Gaslamp Games :
The Dredmor community has also been cooperatively documenting its exploration of the DLC's eponymous feature: The Wizardlands. Peek into this Google Doc to join in.