Attack of the Earthlings combines turn-based combat and stealth in a dark comedic single player campaign, where you the player, take control of the native alien race to defend your home world from the invading humans. Galactoil, a comically dysfunctional energy corporation, are hell-bent on harvesting the known universe for energy and will drill anything in its incessant quest to line its pockets with profit. However, their latest foray into energy exploration on Planet X13, has placed them into a bit of a pickle. The Swarmers, the native insectoid species, have another idea - to eat all the workers!