A catastrophic earthquake threatens to destroy the Aquadome research facility, forcing the protagonist to navigate a perilous underwater environment to secure the base. The protagonist assumes the role of a researcher tasked with managing the complex systems of the Aquadome while contending with the encroaching ocean and mechanical failures. They must utilize specialized equipment and solve logical puzzles to prevent total structural collapse. The narrative unfolds through a text-based interface, requiring the player to input commands to interact with the environment and manipulate objects. The world is defined by the claustrophobic pressure of the deep sea and the technical limitations of the facility's aging infrastructure.

Discussion often centers on the technical challenge of managing multiple systems under strict time constraints. Readers and players frequently highlight the effectiveness of the game's atmosphere in conveying the tension of an underwater disaster. The pacing is noted for being intense, as the threat of the Aquadome's destruction remains constant throughout the experience. Critics often point to the logical consistency of the puzzles as a defining feature of the Infocom style. The work is widely regarded as a classic example of early interactive fiction that successfully integrates environmental storytelling with mechanical gameplay.