Ken McKown writes: On paper DiRT Showdown reads like an arcade racing game dream come true. Developed by the same guys that brought us the nearly perfect DiRT 3, this spin-off of the series combines the classic presentation, superb visual style and incredible handling and physics of the other DiRT games with some new ideas. Instead of off-road racing, we now have destruction derbies, figure eight loop tracks and plenty of metal being smashed. Think of this as Codemasters’ version of Destruction Derby and you get the idea. What we end up with is a solid racer that feels less like a DiRT game, and more like an experiment missing a few key elements.