Ecco the Dolphin: Defender of the Future Cheats

Do the following (you will need a memory card).

Go to the [PLAYER MENU] screen and choose [NEW GAME].

Enter [GYU GYU ???] where ??? can be any three letters you want.

Press the [CIRCLE] button on the controller. If the cheat has worked then a plant on the left side of the screen will release a huge stream of bubbles.

Press the [X] button to create the save file, then return to the main menu.

If you go to the [LEVEL SELECT] screen you will find that ALL of the levels have been unlocked. You may now select any level you want.