The Dead Money expansion for Fallout: New Vegas is now available for download on the PC and Xbox 360.
From Bethesda Softworks
Dead Money, the first downloadable content for Fallout: New Vegas, is now available for PlayStation 3 (via the PlayStation Network) and for the PC (via Steam and Direct 2 Drive) for $9.99.
As the victim of a raw deal you must work alongside three other captured wastelanders to recover the legendary treasure of the Sierra Madre Casino. In Dead Money, your life hangs in the balance as you face new terrain, foes, and choices. It is up to you how you play your cards in the quest to survive.