Ecco Jr.

In this game, a younger version of Ecco goes to see Big Blue, an ancient blue whale, completing tasks such as herding seahorses, swimming through rings, and finding lost balls for sea lions along the way. The gameplay is similar to the other Ecco the Dolphin games, but mainly revolves around using these abilities for solving simple puzzles and problems. One key difference is that the player character cannot drown by staying underwater too long. Likewise, there are no enemies to attack the player character.

Two other playable characters were introduced: Tara the baby orca (there is also a bottlenose dolphin character named Tara in Ecco: The Tides of Time) and Kitnee the young Atlantic dolphin, who is darker gray than Ecco. The player can switch characters at any time.

Upon release, GamePro gave the game a rave review, commenting that "all the creatures and background scenery have the same breathtaking visual appeal of the grown-up Ecco adventures". They particularly approved of how the game, unlike previous games in the series, is accessible to younger players.

Electronic Games gave the game an A, praising the graphics, music, and sound effects.