Virtual pet game Seaman is one of the few Sega games that uses the Dreamcast's microphone, allowing you to interact with their Seaman and respond to its questions. As a simulation, the game's entire objective is to successfully hatch and raise a Seaman. Given a Seaman egg at the beginning of the game, you must check on it daily in real time in order to ensure its well being. Every day, players must inspect the Seaman habitat, using the controller's buttons to manipulate the environment, and communicate with the Seaman as it develops through its stages. Leonard Nimoy provides limited narration throughout the game, guiding you as you learn about your new charges.