Now that you've succeeded in blowing off the head of everything still living on post-apocalyptic Earth, it's time to scour space. Mothership Zeta, the latest downloadable episode for Fallout 3, is now available for Xbox 360 and PC.

In Zeta, the player is abducted by aliens and brought to their massive mothership. You, of course, proceed to go Will Smith on their ass. In addition to offering you a brand new adventure, the DLC also serves up some new weapons and equipment.

Zeta costs 800 Microsoft Points ($10). It'll arrive on the PS3 later this year. This is the last of the announced downloadable content for Fallout 3 but it's quite possibly there's more on the way after this. Bethesda waited until the first three episodes - Operation Anchorage, The Pitt and Broken Steel - were out the door before announcing Point Lookout and Mothership Zeta.