Gama Attack

Gamma-Attack is a single-player shoot 'em up for the Atari 2600 in which the player commands the sole Gamma ship to battle the invading Vegan war fleet that has seized a Gamma outpost planet. The game features a top-down scrolling space battlefield, rapid-fire joystick controls, and a high score objective, making it a notable example of early home-console space shooters and one of the rarest cartridges ever released.