Space Invaders

The gameplay is intense as the aliens march back and forth across the screen. Each time the end of the screen is reached, one row closer to the bottom will be dropped. If you manage to shoot all the aliens, you progress to the next level. However, if even one alien lands, the game ends. Occasionally, a flying saucer will pass by along the top of the screen; destroying it earns extra points.

Four shields (three on some platforms) are located just above your laser cannon, offering protection from the aliens' bombs but also blocking your own shots. You start with a limited number of laser cannons, and if all of them are destroyed, the game ends.