Ecco the Dolphin Game System: Sega Game Gear Cheat Category: Level codes Game Company: Sega Game Category: Puzzle Hint, Cheat, Walkthrough:   Ecco the Dolphin ================ Level Scene Code 1 Medusa Bay QMBRB 2 Undercaves AGCFU 3 Ridgewater VADJR 4 Open Ocean QYEKR 5 Cold Water IAFWN 6 Open Water 7 Deep Water YAHWV 8 The City of Forever #1 OKBKI 9 Origin Beach CCRIJ 10 Dark Water WGUKK 11 The City of Forever #2 MEMSK 12 The Tube GGWAO 13 The Machine KOWMP