Sea Devil , released in 1977 , is a challenging 1-player side-scrolling arcade game for the Bally Astrocade. The player takes control of a spaceship that moves vertically and can accelerate left or right, navigating through levels to destroy all enemy vessels.
The objective on each level is to eliminate all enemy ships that appear at the top of the screen as it scrolls laterally. While moving sideways, the player can shoot directly forward while avoiding enemy fire to progress through the game.