The story continues in the "Atomic Edition". In "Episode Four: "The Birth"", it is revealed that the aliens used a captured woman to give birth to the Alien Queen, a creature which can quickly spawn deadly alien protector drones. Duke is dispatched back to Los Angeles to fight hordes of aliens, including the protector drones. Eventually, Duke finds the lair of the Alien Queen, and kills her, thus thwarting the alien plot. Levels in this episode include a fast-food restaurant ("Duke Burger"), a supermarket, a Disneyland parody called "Babe Land", a police station, the Exxon Valdez, and Area 51.