Downwell

The world has been reduced to ruin and decay from pollution. Humanity now lives on a single island that has hundreds of layers of cities stacked one on top of the other. The richest people can afford to live at the top, and there is an omnipotent government that controls and ruins the lives of those who live below them. Oswin is one of the “runners” who travel between layers via thick vertical metal pipes that connect the city layers together.