If you know what to do next in a level, you will have a lot of fun with Ecco.

User Rating: 8 | Ecco the Dolphin: Defender of the Future PS2
Ecco the Dolphin let's you play as a young dolphin trying to save the dolphin and human world from "the foe." Play through wonderfully detailed and beautiful levels as you communicate with other dolphins and animals, use your sonar to confuse enemies and make friends with fish and turtles, and enjoy the amazing songs in the levels. Each level has a certain objective you need to meet. There are many levels to play in, from the frightening "Four Ways of Mystery," to the fun "Hanging Waters." Some levels even have bosses you need to defeat before moving on, like the cursed dolphin, and the great white shark. Be sure to avoid stinging jellyfish and shark bites, and remember it get to the surface for air if you stay underwater for too long.

Ecco the Dolphin is a really fun but hard game that you need to have the knowledge to know what to do next.