Definitely the Vectrex game with the best graphics I have played so far. It even has music, as well as sound effects!
You are an intergalactic animal collector. You are trying to collect all 20 species of creatures, all the while avoiding all those nasty alien star-shaped drones and , of course, the dragon that will attempt to shoot you with a fireball if you miss too often. Once you have captured a creature (does this sound like Pokemon? It sure isn't.) you still have to find the way out of the intergalactic webspace you're trapped in and take it to your trophy room (great animation).