Pandemonium

Pandemonium is a 1-player space-themed arcade game for the VIC-20.

Alien ships are streaking out of the sky, preparing to attack Earth, and only the player can stop them. The player controls a rocket ship that moves vertically at the left of the screen, while enemy space ships approach from the right. The player earns a point for each enemy ship destroyed. Each game, the player must try to destroy from 10–40 enemy ships, and one point is earned each time a ship is hit.