Super Invaders

Super Invaders is a Space Invaders clone for the TRS-80.

The player controls a small ship which can move horizontally and fire vertically towards the top of the screen. Rows of alien vessels scroll horizontally, and slowly move towards the player on the bottom of the screen, while five barriers offer the player protection. The player must shoot down the vessels while avoiding enemy fire before any of the alien ships reach the bottom of the screen. There are 10 difficulty levels. The player starts with 3 ships, and when all are lost, it's game over.