Ecco the Dolphin 2: The Tides of Time Game System: Sega Game Gear Cheat Category: Cheat Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Ecco: The Tides of Time ======================= Cheat Menu While playing, press Start to view the radar screen. Press Left, 1, 2, 1, 2, Down, 2, Up to reveal a hidden menu. This menu includes options for invincibility, unlimited continues and more!