Image: Space Zap,  Pinball, Video Games, Aliquippa, Pennsylvania, Hopewell Township, Hall of Fame,   Museum

SpaceZap is a reflex action arcade game developed by Game-A-Tron and licensed to Bally Midway in 1980. Having the uniqueness of a four way button control instead of a joystick, and is available on three different machines, mini-myte, Cocktail table and standard arcade.

Space Zap is a space themed arcade game purely based on player reflexes. The goal of the game is to defend an anchored base from the alien attackers as they shoot from random sides. The base is in the center of the screen having unlimited ammo defending from the spaceships that appeared on the north, south, east, and west sides of the screen. If the player failed to shoot a mine the base would explode. The game is set with waves, after the player successfully defended the base they would encounter an attack satellite that would fly around the spaceship until the player hits them or until satellite hits the base. The player would start out with three lives at the beginning of the game.

SOURCE: Wikipedia