Game: Heart Defense
A tower defense game where you prevent virus based infections from getting all the way through the heart. Deploy white blood cells as your towers, and upgrade their capabilities by using DNA strands taken from destroyed viruses. Left click places a white blood cell, which costs 20 bone marrow. Right click on a white blood cell to open up its upgrade menu.
Stay Inside The Box: The whole game takes place in just one screen, no scrolling or changing screens in any way is allowed.
True Colors: The game uses only the basic 16 colors: black, gray, silver, white, maroon, red, olive, yellow, green, lime, teal, aqua, navy, blue, purple and fuchsia. See color chart