Developed by the U.K.'s Introversion Software and initially available in the U.S. only by download through Valve Software's online Steam service, Darwinia is a real-time strategy game with action-puzzle elements, set in an abstract, computer-generated world. "Darwinia" is a virtual theme park that is home to little computer people known as "Darwinians." The virtual world has been infected with a computer virus and players are tasked with eliminating it, by commanding squads of little Darwinians across the angular 3D landscapes. Players direct the Darwinians' laser and grenade attacks by holding down the right mouse button while the cursor over the intended target. Other challenges require players to guide Darwinians safely to remote locations on the map, or get them to operate strange machinery. ~ T.J. Deci, All Game Guide