Saturn Patrol

Saturn Patrol is a 1-player arcade game for the TRS-80.

The player controls a small vessel on the bottom of the screen that can move laterally, and fire vertically upwards. Alien vessels arrive from Saturn, and attempt to destroy the player. The player has a shield, that they can activate once per life, that prevents alien spaceships from approaching. Alien spaceships, if they approach too close, will sweep across the bottom of the screen and destroy the player. The player has 5 lives, and it's game over when all are lost.