Ecco: The Tides of Time 
Cheat mode:
Turn Ecco to the left or right. Pause game play when Ecco is facing the screen. Press A, B, C, B, C, A, C, A, B. A cheat menu with level select, sound test, music tempo, message test, unlimited life, and teleporter coordinate options will appear. 


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Level Normal Hard  
Crystal Springs MKUYFZEB  MOAXEAFB 
Fault Zone EEFJPGZA  ICVTHJZA 
Two Tides CVDTVAZA  QGFPDAZA 
Skyway QUDKOMDB YEMFLPDB 
Sky Tides MGKATNDB  QYMCLPDB 
Tube Of Medusa MGOADEZA  AWVUHJZA 
Aqua Tubeway (Unknown) YAWZHJZA 
Skylands AYQVHXEB CDUNDAFB 
Fin To Feather EUXFCYXA  QSZGOYXA 
Eagle's Bay ODTSWODB  UEFJLPDB 
Asterite's Cave SLIDTVXA  SNZLOYXA 
Maze Of Stone (Unknown) ASJVKPXA 
Four Islands AGPDSFBD  EEPLGGDB 
Sea Of Darkness IMEKDNXA  YWJYKPXA 
Vents Of Medusa WVSYVXYA  OLFUDAZA 
Gateway SDOJWXEB IOTSDAFB 
Moray Abyss UWUXHWXA  KHAIPYXA 
Sea Of Birds ECSEVXYA  WHRIHBZA 
The Eye UAHBJYQE MGGMVBRE 
Big Water UALLOOGA  MGKWASGA 
Deep Ridge WMFSCSOD  OSEXOVOD 
The Hungry Ones QYMPUWJE  YCRVOFJE 
Secret Cave UKSFQNPE  MQRHCRPE 
Lunar Bay YOPVQNPE  QUOXCRPE 
Black Clouds IMYWMHLE  ASXAYKLE 
Gravitorbox WXJHUWJE  ODJTGAKE 
Globe Holder ODNJUWJE  GJMRGAKE 
Dark SeaI VSRBWDA QTBRPWAA 
New Machine (Unknown) CEWXDYHA 
Vortex Queen WOWTKBDA  KICHPWAA 
Epilogue GIPZZGBA YBQETFBA 
Atlantis EPODJZHA ITHUPBIA 
Fish City OQTKGDFA  CYQFJSBA 
City Of Forever WYFTOXKA  EPWXFJHA 

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