Save the Citadel

Earth has become unlivable, and the last survivors now cling to islands drifting through space. In the Save the Citadel crisis, rebuilt settlements don't last long under asteroid strikes and raids from hostile ships. Nearly every refuge has already fallen. One stronghold still has a chance, with a growing colony packed inside its walls and humanity's future hanging on what rises there next.

How to play?

Place farms, steel factories, residences, and other essential buildings inside the citadel to supply food, metal, and living space. Defensive turrets fire on enemy shuttles near the colony, but construction drains energy with each action. When nearby ground runs out, attach fresh tiles to the settlement and claim more room for crops and expansion. Once your energy is spent, press the End Turn button and move to the next cycle.