A strange little side quest
Here is a rabbit hole for the next loading screen in Santa's Tic Tac Toe: Nintendo's Donkey Kong arrived in 1981 and introduced the character first known as Jumpman, who later became Mario. A second detail makes the picture even better: In 1958, Tennis for Two used an analog computer and an oscilloscope to turn simple physics into a playable tennis-like demonstration. The screen is modern; the urge to test skill, pattern and timing definitely is not.