Codemasters recently released a demo for Colin McRae DiRT on the Xbox Live Marketplace, and now they've decided to launch a pre-order deal that'll allow users to unlock 10 more cars, only available from certain retail stores: Amazon.com, BestBuy.com, GameStop, GameCrazy, EB Games.

The extra cars that you'll be able to unlock are the Subaru Impreza WRX-RA STI version II, Peugot 205 T16, Toyota Celica GT-FOUR, Freightliner Century Class S/T, MAN TGA, Kamaz 4911, McMillin Racing Car, Lancia Delta S4, Icker Jimco buggy and the Kenworth T2000.

If your interested in getting a copy of DiRT on its release day, then this is a deal you should consider taking. The PS3 edition of DiRT is expected to be released soon after the PC and Xbox 360 versions, which debut in June.