Ecco the Tides of Time for the Sega Game Gear is an action-adventure game, a sequel to the original Ecco the Dolphin. Players control Ecco, a dolphin with the ability to swim at high speeds and communicate with other sea creatures. The game builds upon its predecessor with a variety of aquatic environments, challenging puzzles, and time-travel elements. With enhanced graphics and an atmospheric soundtrack, players must navigate through the ocean depths, using sonar and acrobatic maneuvers to overcome obstacles, defeat enemies, and restore balance to the ocean's ecosystem.