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In EcoQuest: The Search for Cetus, the player is cast into the role of Adam, the twelve-year-old son of the famous ecologist Noah Greene. One day, his father rescues a dolphin from an abandoned fish net. As Adam becomes more friendly with the creature, he is amazed to discover that the dolphin can talk! Adam finds out that his new friend is Delphineus, the messenger of the whale king Cetus. As a qualified scuba diver, Adam is chosen to venture into the underwater kingdom of animals known as Eluria, and help its inhabitants.

The game's interface and basic gameplay are similar to those of other Sierra adventures: the player interacts with the environment by selecting icons that represent verb commands ("Look", "Talk", "Use", etc.) and applying them to objects or characters. Compared to most other adventure games by the same company, the difficulty level is lower, with the intention of making the game more suitable for younger players; for instance, it is impossible to "die" or get irrevocably stuck in the game.

Despite its supernatural elements, EcoQuest contains educational material. The inhabitants of the deep sea are realistically depicted, and there is plenty of information concerning their life habits, environment, and the threats posed to them by human beings.


EcoQuest: The Search for Cetus DOS Inside the temple
EcoQuest: The Search for Cetus DOS At the Oracle - Adam learns the history of Eluria and of the disappearance of Cetus
EcoQuest: The Search for Cetus DOS There are many non-obligatory little things you can do in the game. One of them is playing <moby game="King's Quest V: Absence Makes the Heart Go Yonder!">King's Quest V</moby>!
EcoQuest: The Search for Cetus DOS Inside the mayor's place

Promo Images

There are no promo images for this game


Alternate Titles

  • "הרפתקאה במצולות" -- Hebrew spelling
  • "Le Secret de la Cité Engloutie" -- French title
  • "EcoQuest: Die Suche nach Cetus" -- German title
  • "EcoQuest 1: The Search for Cetus" -- Tag-lined title

Part of the Following Groups

User Reviews

EcoQuest – a whale of a tale Katakis | カタキス (41284) 4.6 Stars4.6 Stars4.6 Stars4.6 Stars4.6 Stars
Fun, educational game, one of a kind. matt cohen (12) 4.4 Stars4.4 Stars4.4 Stars4.4 Stars4.4 Stars
Remember those Saturday-morning cartoons? saikofish (961) unrated
An exceptional game, that manages to combine education, humor, fun and an incredible sense of wonder. Mickey Gabel (379) 5 Stars5 Stars5 Stars5 Stars5 Stars
One of the best adventure games ever made. Tomer Gabel (4643) 4.6 Stars4.6 Stars4.6 Stars4.6 Stars4.6 Stars

Critic Reviews

The Retro Spirit Dec 23, 2006 6 out of 6 100
Play Time Apr, 1992 94 out of 100 94
ACE (Advanced Computer Entertainment) Mar, 1992 820 out of 1000 82
Adventurearchiv Feb 06, 2003 81 out of 100 81
Tap-Repeatedly/Four Fat Chicks May 17, 2003 4 Stars4 Stars4 Stars4 Stars4 Stars 80
Power Play Jun, 1992 73 out of 100 73
PC Games (Germany) Jun, 1993 72 out of 100 72
Aventura y Cía Feb 15, 2002 3 Stars3 Stars3 Stars3 Stars3 Stars 60
ASM (Aktueller Software Markt) Apr, 1992 7 out of 12 58
PC Joker Mar, 1992 58 out of 100 58


Topic # Posts Last Post
Something's (slightly) wrong with the music 3 Game Guesser (28)
May 24, 2015


CD-ROM version

After the disk release, Sierra decided to re-release this game on CD. The CD version featured full speech.


When looking at the PC at the beginning of the game in the office, there's is a picture of King's Quest V.

Information also contributed by Ju, just Ju...
IJan (1991) added EcoQuest: The Search for Cetus (DOS) on Dec 16, 1999