A strange little side quest
The rules may be simple on screen, but the backstory around FNF VS Beast Boy is anything but tiny. In 1958, Tennis for Two used an analog computer and an oscilloscope to turn simple physics into a playable tennis-like demonstration. It also connects to a different milestone: Midway's Gun Fight from 1975 was the first arcade video game to use a microprocessor. Not bad for a few facts hiding behind a Play button.