Doc and Sprocket challenge each other to a game on Doc's new Apple IIe.
The game is an invention and the attached Monitor III is shown as having colour graphics when it was green screen.
Year of feature (shown above)
I recognized the BASIC program that alternates the color line and black line to the randomized point that is rendered. A small delay to see the beatiful pattern before refreshing by executing "HGR2". I wrote a program like that more than 30 years ago.