City Concept for Chance of Rain

I took a class called Art 300 Environments with Peter Moehrle in the Fall of 2008, and he assigned gave us this:

and I turned it into this:


So, I've decided to incorporate the same idea to create the concept of the city for Chance of Rain. Plus, I thought I'd get in the practice while I have time between now and when school picks up again.

This is all I've done so far: