Ecco: The Tides of Time cheats and cheat codes for Nintendo Wii

Debug Menu
When you have control of Ecco, pause the game while Ecco is facing you. 
If you have successed, press A, B, C, B, C, A, C, A, and B. 

If the code is accepted, a menu will pop up with different of options 
such as a sound test, tempo, level select etc. 
You can re-enter the code as many times you want.

Play the game in Hard Mode:
In the starting area break the two shells above you, and then swim 
through the tunnel to play the game in hard mode.

Passwords - Level:
AOJRDZWA - Asterite's Cave 
CEWSXKPA - Epilogue 
CHGTEYZE - Secret Cave 
CSNCMRUA - Home Bay 
KDCGTAHB - Gateway 
KDKINTYA - Two Tides 
MMVSOPBB - Vents of Medusa 
MULXRXEB - Skylands 
MXURVMLA - Dark Sea 
OKIMTBPA - Vortex Queen 
OZUNSKZA - Fault Zone 
OZWIDLDB - Sky Tides 
QQCQRDRA - Big Water 
QSJRYHZA - Tube of Medusa 
SBFPWWJE - Globe Holder 
SGTDYSPA - Fish City 
SZXHCLDB - Skyway 
UEPMCVEB - Crystal Springs 
UIXBGWXE - Gravitorbox 
UOYURFDB - Four Islands 
UQZWIIAB - Sea of Darkness 
UXQWJIZD - Deep Ridge 
WBQHMIUE - Hungry Ones 
WSSXZKVA - City of Forever 
YCJPDNDB - Eagle's Bay 
YCPAWEXA - Fin To Feather 

Passwords for Hard Mode:

AGNEXBTE - The Eye 
AVQJTCBA - Secret Password 
AXBGKHBA - Epilogue 
CRNPTFZA - Fault Zone 
CZVQNHCB - Four Islands 
EGAQRVXA - Asterite's Cave 
EUTQQQWA - Maze of Stone*
GOSTCXJA - New Machine*
KNHRKJYA - Aqua Tubeway*
MCMBPJDB - Skyway 
MIPGDOME - Globe Holder 
ODFADPYA - Tube of Medusa 
OOSFBXAA - Vortex Queen 
OZMRKIDB - Sky Tides 
QKLLFPHB - Gateway 
QNSGAPGA - Home Bay 
QSNVMMDB - Eagle's Bay 
QUKGZZYA - Two Tides 
SHWZZNBB - Vents of Medusa 
SPKHKISE - Secret Cave 
UPODMUQD - Deep Ridge 
UQTFBRXA - Fin to Feather 
USKIKDOE - Black Clouds 
WFMYIDAB - Sea of Darkness 
WKGETHCA - Fish City 
WNQWZMME - GraviatorBox 
WPHSAAFB - Crystal Springs 
WQHFTZHA - City of Forever 
WTHXKISE - Lunar Bay 
WXRDJYEB - Skylands 
YCBXONIA - Big Water 
YCFSBRAB - Moray Abyss 
YOHVUVLE - The Hungry Ones 

* New level found only in Hard Mode

Infinite Air and Health:
Turn Ecco left or right and pause the game while Ecco is facing towards 
the screen. Press A, B, RIGHT, A, C, A, DOWN, A, B, RIGHT, A, and then 
resume the game.