With week one sales out the door, Codemasters is proud to announce that DiRT, the company's critically acclaimed new racing title, has exceeded expectations across the board. If DiRT's early review score of 9/10 from Official Xbox Magazine (U.S.) wasn't any indication, Codemasters is now reporting that week one sales of the game have surpassed 500K copies globally, and the playable demos for the Xbox 360 video game entertainment system from Microsoft and the PC have been downloaded over 500K times worldwide.