A maze game. Catch aliens before they catch you. Start with F1. Set traps by pushing up/down+fire. Wait until an alien walks to the trap, and neutralize the trap by pushing fire and up or down towards the trap.
The TRAINED version was patched so that you cannot dead. The 2nd version uses $bd fill byte at the end instead of the $aa byte. (Both are from original cartridges.)
"T.G. Software presents Droids - copyright 1983 by Solitare group". Shoot droids by pushing the fire button and moving the joystick to the desired direction. Turn the red objects to yellow and then to green by touching them in the proper order. Whenever a droid touches an object, it resets to red. To complete the game, all objects must be green simultaneously.
A flipper by Micro Digital. Start the game with F1 (one player) or F3 (two players). Add launching power with F5 and shoot the ball with F7. Move all slaps with the Commodore key. The flipper can be pushed with the space bar.
A shoot-em-up by LLamasoft. Requires joystick. A bit like Hellgate. This game is also available as a loadable program for computers equipped with an 8k expansion.
A variation of Radar Rat Race, similar to Car Race. It appears that this game was first modified to Car Race, then to Radar Rat Race to avoid a lawsuit.
Serpentine is a labyrinth game where you are a snake who eats up stuff in order to become bigger. There are other snakes who try to eat you, and you can eat them from the back side.
Destroy tanks before they destroy you. By Audiogenic. After aligning the screen, press Return and not Restore, otherwise the game won't work. This seems to be a newer, bug-fixed version.