From Microsoft: Forza Motorsport peels out of the Xbox garage with the ability to transform more than 200 real-life production cars from over 40 of the world’s top car manufacturers into speed-drenched racing machines with aftermarket parts from more than 150 partners. A powerful physics engine and a long list of online racing features playable only on Xbox Live, Microsoft’s premier online gaming service, gives Forza Motorsport the checkered flag with racing gamers and car enthusiasts as the deepest racing simulator ever offered.