Game File: 

Pixel Colony windows.zip

This program will ask you to select an image. It will then turn that image into a terrain map which you use to create an island paradise. Your island will then be colonized by a ship full of pixels who will multiply and begin to convert the landscape into industrial sprawl. There is no interaction, the effect is supposed to be more like watching an ant farm than playing a game.

Some notes on performance:

I tried hard to optimize it this program, but there is still significant slowdown if you use a large image. I used one that was about 400x500 to good effect. Even then, once your island gets a large population slowdown is inevitable. I ran this on a dated laptop, though, so your mileage will vary. Theoretically, the program will keep running indefinitely even if the frame rate tanks.