Play 688 Attack Sub (USA, Europe) Online

688 Attack Sub came out for the Sega Genesis in 1989, published by Electronic Arts. It was one of the more serious military simulations available on the console at the time, offering a detailed, methodical alternative to the faster action games that dominated the platform.

You command an American or Soviet submarine, managing its sonar, weapons, and navigation across a series of Cold War missions. The main objective is to locate and destroy enemy vessels while avoiding detection yourself. Key mechanics include interpreting sonar contacts to identify ship types, calculating torpedo trajectories manually, and carefully managing your sub's noise and depth to stay hidden. The pacing is slow and deliberate, demanding patience and precision rather than quick reflexes. It feels tense and deeply immersive when you successfully track a target without giving away your position.