Hidden 10th Kingdom
From disc one's [Main Menu], select [Kingdoms]. You will see a map that lists 9 kingdoms and asks you to "Search for the Hidden 10th Kingdom". You move [Lef from the 1st kingdom to the 3rd, then you move [Up] to the 4th, then you move [Lef to reach the castle. Press [Enter]. You have found the "Hidden 10th Kingdom", as you can see from the text screen that comes up. Once you've read the message, you can click [Up] one more time to highlight the [Magic Mirror]. Selecting it reveals a short clip showing two of the characters entering the 10th Kingdom.