The Invaders

Defend Earth from an unrelenting alien advance in The Invaders, a shooter released circa 1979 by Zaccaria/Zelco. Players control a laser cannon stationed at the base of the screen, tasked with eliminating rows of descending aliens before they reach the ground. Movement is restricted to left and right along the bottom edge, requiring precise timing and strategic positioning to target the invaders as they march downward. The gameplay presents a straightforward challenge: shoot the aliens while anticipating their movements. With only three buttons—left, right, and fire—players must quickly adapt to increasingly difficult waves of enemies. The Invaders features a vertical screen displaying a resolution of 768 x 720 pixels with a refresh rate of 55 Hz and utilizes a limited color palette. This title is considered by some to be similar to other games in the space shooter genre, though it maintains its own distinct gameplay identity. A related game, “Super Invader Attack,” was produced by Sidam as an alternative version.