User Summary 3D-Sub is a light submarine simulation. Players command a sub and must destroy as many other submarines as possible, pick up their microchips and bring them back to a chest hidden in a cliff. The player can control the bearing and speed of her ship. The sonar displays the sea bank, and the radar displays enemies and the location of the chest. Enemies are destroyed by firing torpedoes at them with the nose of the submarine facing the right direction.