On this game you appear to be the antagonist. You control a UFO and must shoot down airplanes, helicopters, jets, tanks, etc. I bought this game in 1983 and it's a great game. Great but not perfect.
There are no levels. The game just keeps going on and on. On some game variations, you can only move your UFO up and down. But on other game variations, you can move your UFO all over the screen. I paid $5.50 for this at Revco and I'm glad I did.
Also, the game isn't very difficult. If you like games with a lot of challenge, you won't like this one. But if you're a game collector like me, you may want to add this game to your collection.