Password - Level Passwords | |
| MCLFRQLW | Cold Water Zone |
| HYAUGFLV | Ridge Water |
| FNCQWBMT | Open Ocean |
| DWFFZBMV | The Ice Zone |
| QGDJRQLA | Hard Water Zone |
| NDRBRIKR | The Lagoon |
| FKWLACCA | The Vents |
| DQDIACCI | The Undercaves 2 |
| UYNAINCC | The Undercaves |
| UWXIOQLK | The Island Zone |
| EILQOQLC | Deep Water Zone |
| XAKUQQLS | The Marble Sea |
| FDGXQQLC | The Library |
| ZUVPQQLU | Deep City |
| AABBRQLU | City of Forever |
| PLABUNLT | Jurassic Beach |
| FQREUNLI | Pteranodon Pond |
| QXKIUNLX | Origin Beach |
| OBEMUNLX | Trilobite Circle |
| JNXPUNLA | Dark Water |
| WSGAKNLC | Deep Water 2 |
| ZBPIGPLD | City of Forever 2 |
| KUVEKMLK | The Tube |
| SDDBKMLG | The Machine |
Password - Infinite Air Password | |
| Infinite Air | LIFEFISH |
Password - Debug Menu | |
| The following code must be entered while the game is paused and Ecco is facing the screen. To get Ecco to face the screen, turn him left or right and pause midway through the turn. | |
| Debug Menu | Right, B, C, B, C, Down, C, Up |
