Space Clusters

Space Clusters is a 1-player arcade game for the Apple IIgs.

The player controls a small spaceship which scrolls horizontally along the bottom of the screen, and fires vertically upwards. The player must combat with swarms of alien space vessels which move towards the player and fire at them in waves. There are a total of progressively more difficulty 50 levels. The player starts with 5 lives, and it's game over when all are lost.