TurretGirls is a single-player tactical survival game on the edge. The alien invasion is here, and the last turret is all we have left. You are the only soldier in position. The planet is on fire. Portals are bursting in the sky, throwing out alien biomass and engines of destruction. Your task is to hold the generator while Earth searches for a way to deliver the final blow. There is nowhere to retreat. Each wave of enemies requires precise calculation, weapon upgrades and wise distribution of resources. Hold out as long as possible and perhaps save the remnants of humanity. Otherwise, it all ends here. Cold. Lonely. Forever.