Aliens have thrived on Planet LV1201 for over 10,000 years. Threatened only by occasional Predator hunts over the centuries, the planet was an ideal sanctuary for the Queen Empress. Then humans came to do research. Now under siege, the Aliens must use deadly speed, razor-sharp claws, teeth, and tail, to rid their home of these invaders.

Aliens keep to the shadows until it is time to strike, often dropping from the ceiling to eviscerate their foes with lethal jaw and pounce-and-slash attacks.