Here are some cheats and tips for the game Ecco The Dolphin.
Cheat mode:
Press Start during game play to view the sonar screen. Press Right, 1, 2,
1, 2, Down, 2, Up to display a new menu with invincibility, unlimited
continues and other options.
Level Password
Medusa Bay QMBRB
Undercaves AGCFU
Ridgewater VADJR
Open Ocean QYEKR
Cold Water IAFWN
Deep Water YAHWV
The City of Forever, part 1 OKBKI
Origin Beach CCRIJ
Dark Water WGUKK
The City of Forever, part 2 MEMSK
The Tube GGWAO
The Machine KOWMP
The Vortex WCSKQ