Wool
We live in a 135-story underground silo, a self-sufficient community of perhaps a few thousand people which is, as far as anyone knows, the only habitable place in the universe. God placed it with care between the toxic depths of the earth and the toxic heights of the sky, and peopled this habitable world with his chosen. The world above, glimpsed through a few precious sensors, is a lifeless place of toxic winds. Everyone knows their level and their job.
And then, one day, the IT Department tries to take over and the Mechanics go to war. A nicely-imagined and well drawn world – a planetary anti-romance – animated by a clever if overlong quest, this seems designed and destined for the movies (and, apparently, has been optioned by Ridley Scott).