Hammer Head

Description
Hammer Head is a 1-player arcade game for the 8-bit Atari.
A peaceful underwater expedition to gather fish for the Smithsonian Institute becomes a potentially deadly encounter with King Neptune beneath the mysterious waters of the Bermuda Triangle in a game of evasion and countermove. The player moves their submarine vertically at the left of the screen, and can fire horizontally. They gain points by shooting fish and the hammerhead shark that approach from the right. The player starts with 5 lives. There are 3 levels of difficulty.