Game: Official X-Box Magazine Disk #38, Platform : Xbox Game Cheat Codes
Unlock The Easter Egg Demo!
Go to the playable demos screen. On the demo screen, hold down the left trigger and press
A, Up, X, Y, Left, Right, B, B, Down, Down, Y, Left, X, Right, A, Up, Down, and release
the left trigger to unlock The Incredible Easter Egg Demo.