From Wikipedia Colin McRae: Dirt (shortened to Dirt in North America, and stylised, DiRT) is the sixth racing game in the Colin McRae Rally series, developed by Codemasters, and the last of the series to be published before Colin McRae's death. It features new graphics, audio, physics engine, new vehicles and a new game engine which was co-developed between Codemasters and Sony Computer Entertainment. The game features a variety of off-road racing categories as well as World Rally Championship style events. The sequel, Colin McRae: Dirt 2, was released in September 2009.