Parametric city LargePrint

I made this mini city scape for film students who wanted to project some patterns on before they filmed in a macro mode. I had access to a large format 3d printer and the print is 50 by 50 cm, and its not very tall. I think you should be able to change some parameters using the customizer or download the .scad and edit in openSCAD. I made the base thin so it take one layer of its coarsest setting.
The file will generate a random city but I have also included the one I printed (0.5mm).