Candidate for the "Most misleading cover art" award. No graphics other than a couple of parallel, later diverging lines. Still, it was the first cassette game we ever got, back in late '83, and I played it quite a bit before getting real games.
I try to do my ratings based on how I felt about the game at the time, not through my older, more jaded eye. So it gets a '5'. I'm amazed to see how rare it is.