So, here’s what you do, from the Main Menu go to Extras and then go to the Skin Manager. Towards the bottom you should see Pre-Order Code. On the XBOX 360 it’s Y it may be different for the PS3, PC, and Mac.
Once you click on Pre-Order Code you’ll be presented with another screen to type in the code. The code to type in is:
This code will enable 2 additional skins, the original Prince skin from Prince of Persia: Sands Of Time and a new outfit for Princess Elika.
I’ve tested this code on the XBOX 360 if anyone has tried this code on any other system please leave a comment to let the readers know if it works on other systems as well.