A quiet ocean. A loud decision.
Click the map to set your heading.Hold thrust, line up, then fire.
Your cyan submarine faces the bright end. W / ↑ moves forward; S / ↓ reverses. A/D or ←/→ turn. You can also click the chart to point at a contact.
Sonar online reveals enemy echoes, but broadcasts your position. Toggle F / O to go quiet. Contacts vanish and their last echoes stop updating; enemy torpedoes lose their live lock. You must still steer clear of them.
Space fires ahead. Torpedoes acquire targets in a narrow forward cone, so line up first. Three tubes reload one torpedo every five seconds. Rocks block torpedoes and can shield you. Mines also shoot at incoming torpedoes: use a spaced salvo to overwhelm an intercept, leaving a moment between shots.
Clear three original missions: destroy a drifting mine, repel four submarines, then hunt a disabled sub through a minefield. A lost ship can retry the same mission. Cleared missions are saved locally.
P pauses; R restarts the current mission. Buttons work with a pointer or touch. No audio or microphone is used.