Konami Code
At the main menu (Your character's bedroom) enter the Konami Code (Up, Up, Down,
Down, Left, Right, Left, Right, Square, Triangle, Start) If it worked, you'll
hear childrens laughter and get a free Robbie doll as well as enable the sale of
Robbie Dolls. This can be re-done each time you load up your character, so keep
reloading and using the Konami code if you want a horde of Robbie dolls.