I would imagine it would. Basically you would have to save your stats and other variables to the harddrive, and then write a script or dll so that at a certain point in the game the user would be prompted to change disc(this would have to be a two way deal espically if the user at some point and time will be going back to a point on the first disc)you would probably have to also write a disc check to verify that the correct disc was being used at the correct time.