Ecco the Dolphin Game System: Sega Game Gear Cheat Category: Game Genie Game Company: Sega Game Category: Puzzle Hint, Cheat, Walkthrough:   Ecco the Dolphin ================ GAME GENIE CODES: Infinite Air: 3E3 4B8 C46 Infinite Energy: 21C D49 6E2 No extra air whn jumping out of water: 217 AD8 6E2