Gearworld: The Borderlands

In days before, the gears still turned and the old machines still worked. The sky was clear and blue, and life flourished. Then noxious clouds came and choked the air. Smoke blanketed the sky. Some people departed in flying cities, ascending above the clouds to the World Above. Others dug deep beneath the ground, vanishing into the World Below. Meanwhile, those in the Borderlands watched the world grow dark as the gears ground to a halt.