Floating God City: I Will Build the Only Pure Land in the Sky in the Last Days

The apocalypse is coming, and the earth has fallen and monsters are rampant. I awakened the power of the floating fortress and built the only safe zone in the sky from scratch. I farmed and stocked up on supplies, recruited desperate beauties, killed mutated monsters, upgraded the divine city in the sky, and overlooked all living beings in the wasteland!