It would have to be this one for Final Fantasy VII that tells you how to enter the game in real life. Basically you go on the world map in the game then go naked in front of the TV screen, (sorry FFVII: PC players. Looks like you can't enter the FFVII world.) close your eyes and hop around and spin in a circle seven times while patting your head and rubbing your tummy. I read that on GameFAQs somewhere.