800 Fathoms is a single-player action shooter game in which players control a submarine navigating through underwater levels, battling various aquatic enemies and bosses. In this game, players must guide their submarine through five increasingly challenging levels, fighting underwater terrors with torpedoes and missiles, with difficulty escalating as the underwater landscape becomes more constricted and complex. It stands out with its arcade platform, featuring progressively difficult gameplay, boss battles at the end of each level, and a focus on maneuvering in tight underwater environments, providing an engaging challenge for players.