If you enter the classic Konami code (Up, Up, Down, Down, Left, Right, Left, Right, B, A) on the title screen, you should hear the Turtles say ''Yeah!'' Now hit start and go to the story mode. Every time your turtle takes a step in one of the stages, a goofy ''boing!'' sound will be heard. Boing, boing, boing...
Set your GCN's date to October 31 and the Turtles will all be wearing pumpkins on their heads. A Halloween treat!
Set your GCN's date to December 25 and the Turtles will all be wearing little Santa hats! How cute! ^_^
Things that can only be unlocked by doing the following: