Bethesda has announced that Fallout 3 DLC, Mothership Zeta, will be released for PC and Xbox 360 on August 3 priced 800 MS Points.

In Mothership Zeta a strange Alien signal is being broadcast throughout the Capital Wasteland, originating from a crashed UFO. Is it a distress call, or something far more sinister? Players will find themselves beamed aboard an enormous Alien spacecraft and must fight their way to the bridge of the ship and secure an escape.

The DLC will feature a host of new and destructive alien technology, including the Alien Atomizer and Drone Cannon. Expect to come across an unexpected array of characters, both from the Capital Wasteland and from Earth's past.

Mothership Zeta will be released for PS3 later this year.