Lost World

In a post-apocalyptic world, heavy pollution has forced humans to move underground. It was thought to be a temporary shelter, but generations passed. After the discovery of technology long lost, humans now have decided to reclaim the Lost World. * Refine resources and send them to factories where they are turned into hi-tech items. * Clean up the pollution on the ground, in the water, and in the air to prepare for the return to the surface.