Slip beneath the waves in 688 Attack Sub, a tense modern submarine simulator that puts you in command of a nuclear-powered hunter-killer during the razor’s-edge brinkmanship of the late Cold War. Track enemy ships and subs on sonar, stalk convoys and missile boats in the deep, and decide when to creep in silent running and when to unleash a spread of torpedoes or cruise missiles that could tip the balance of power. Juggle depth, speed, and noise level as you evade counter-detections, dodge incoming weapons, and navigate deadly minefields and narrow straits where one wrong move can be your last. With authentic instrumentation, varied missions, and an atmosphere thick with oceanic tension, 688 Attack Sub turns your machine into a steel shark prowl simulator—can you complete your secret orders and slip away unseen?