My edit of Morgajel's Unique Buildings Brush for Gimp.
From their description: "This brush lets you paint a unique city layout in minutes. This brush is a collection of 81 individual roof lines that can be added to any map to whip up a quick city."
My solid version results in less blurriness when working on a larger scale with smaller buildings.
This brush acts as a gimp brush pipe, meaning that... [click here for more]