Submarine

A one or two player shooter game published and developed by Sigma Enterprises in 1985.

The player takes control of a futuristic submarine and must shoot their way through the game's levels in a underwater city and in the depths of the seabed and it is attacked from both sides beneath the water in which the submarine moves and from the bottom the water, by a variety of enemies you must destroy all the machines and avoid collide with obstacles while you pick captive divers and fuel to reach the end of level.