From the back of the box:
You think it may be just another routine Moon Shuttle flight as you blast your way through your first asteroid shower. But wait--what are those up ahead? They look like the enemy’s rocket-launcher forces!! They’re flying in and out of your sights, making it nearly impossible to shoot them down. And even if you succeed, it looks like an even denser asteroid shower up ahead!
As the pilot of this spectacular Moon Shuttle flight, you repeatedly encounter unexpecte4d dangers as you blast your way through asteroids, bomb launchers, expandos, and man-o’-wars.
And just as you think you’ve hurdled the final obstacle-—you begin again, only this time makes the last onslaught look tame!!!