Polaris

Polaris is an unlicensed port of Taito's arcade game of the same name where you take control of a red submarine that needs to shoot blue and pink planes flying around while avoiding the mines, missiles, and not colliding into the green submarines. There is also a yellow destroyer warship dropping depth charges. Even if it gets hit, it will leave one mine to mess with you. After that the special stage has you dealing with the last plane that will launch torpedoes for bonus points or going on to the next screen if you get hit. The more you progress, the faster they get, and the more time wasted, the more you are restricted to the bottom of the sea. Sometimes a sea horse or jellyfish will appear, and they can't be hit. If you get hit, your submarine explodes, when reaching 10000 points an extra submarine will be awarded. The game is over once all your submarines are destroyed.