Video Game: Submarine Attack

Submarine Attack is a side-scrolling shoot-em-up game for the Sega Master System II, released in 1993. It features an advanced submarine that you, The Captain, must use to destroy the enemy. Although you start with rather amazingly poor shooting skills, you can improve your submarine with upgrades obtained from destroyed enemies. Sometimes you can obtain health and additional lives by the same means. First, your enemies are human, but soon they'll change into many monstrous creatures of mythology and other worlds, before you meet the final boss. The game has unlimited continues.

This game provides examples of: