Sky-High: The alien-infested corporate offices of Pooty, Inc. near the center of Las Vegas. This map includes three indoor floors taken over by the aliens and two rooftops, jump pads, stairwells, and building-to-building combat.

Command: EDF command center with an imprisoned BattleLord at its core! A two-level map featuring winding stairs, straightaway corridors, and jump pads

Drop Zone: Rooftop of Duke’s Lady Killer Casino featuring indoor and outdoor combat and stairwells for platforming, an EDF dropship on landing pad, and a bottomless pit.

Biohazard: Fight in the Breston Plant Nuclear Power facilities and compete across multiple floors in locker rooms, restrooms with showers, control rooms, and the nuclear waste storage room.

Gearbox Software is about to release another batch of downloadable content for. The DLC, entitled "The Doctor Who Cloned Me," adds to both the single-player and multiplayer sides of the shooter.In the DLC's new campaign, Duke faces off against Dr. Proton in Area 51. He'll encounter new enemies and bosses in this adventure. New weapons and Trophies are included as well."Doctor" adds four new multiplayer maps. These maps are playable in all modes, including the ones introduced in the "Hail to the Icons" DLC "Doctor" will hit the PS3, Xbox 360 and PC on December 13th. It's priced at $9.99.