This 1992 Adventure Main Game casts you as Ecco, a young dolphin whose pod is lost to a mysterious whirlpool. Gameplay centers on non-linear aquatic exploration, survival, and puzzle-solving across vast oceans. Key mechanics involve using sonar to interact with the environment and uncover clues. Uniquely, the journey evolves into a science-fiction narrative involving time travel and ancient alien threats, demanding mastery of underwater navigation to save the world.
The primary gameplay loop centers on exploration, puzzle-solving, and survival within a non-linear aquatic environment. Players navigate the dolphin protagonist through diverse underwater settings, ranging from coral reefs and deep trenches to ancient ruins. A key mechanic involves using sonar to interact with the environment, reveal hidden paths, communicate with other marine life, and solve environmental puzzles.
Survival elements are present, requiring the player to manage the protagonist’s health and air supply while avoiding dangerous predators and environmental hazards. Progress is often gated by learning new abilities or finding specific items that unlock access to previously unreachable areas. The game features a strong emphasis on discovery, as players piece together clues from various creatures and ancient sources to understand the source of the ocean's chaos.
What sets this title apart is its commitment to an entirely aquatic setting combined with a surprisingly complex, science-fiction-tinged narrative. Unlike typical action-adventure titles, the protagonist is a dolphin, necessitating unique movement mechanics and interaction methods. The journey evolves beyond simple rescue, delving into themes of ancient civilizations, time travel, and extraterrestrial threats, providing a narrative depth rarely seen in platforming or exploration games of its era.
The narrative follows the dolphin as he seeks guidance from venerable sea creatures, eventually leading him to uncover the truth behind the devastating storms. This quest takes him across the globe, encountering diverse marine ecosystems and uncovering the secrets of the long-lost Atlanteans. The storyline involves traveling through time to confront the source of the ecological disaster, requiring the player to master ancient knowledge to succeed.
As a foundational title in the adventure genre, this main game has seen numerous ports and releases across platforms including the Sega Mega Drive/Genesis, Sega CD, Xbox 360, Wii, iOS, PC (Microsoft Windows), and Linux. Since this is the core, original adventure, there are no official downloadable content packs or expansions associated with this specific release.
The progression involves gaining new powers, such as enhanced sonar capabilities, which are crucial for combat against the alien forces revealed later in the story. The narrative structure demands significant backtracking and exploration to gather necessary artifacts and knowledge before confronting the ultimate threat.

"Echo the Dolphin" compatible with 3D stereoscopic vision It has become easier to play with a new mode that eases the difficulty and a save function in the middle.

The LCD version of Ecco the Dolphin is a handheld game created by Beck-Tech for Tiger Electronics and released as part of their Pocket Arcade series of LCD handhelds. It is based on the Sega Mega Drive game, Ecco the Dolphin. This game was designed by cartoonist I.B. Nelson after Eternal Champions.

8-bit port of Ecco the Dolphin.