A strange little side quest
Here is a rabbit hole for the next loading screen in Santa Claus Hidden Gifts: The first crossword puzzle book appeared in 1924 in a cautious initial printing of 3,600 copies, complete with a free pencil. The broader history adds one more wrinkle. Nintendo's Donkey Kong arrived in 1981 and introduced the character first known as Jumpman, who later became Mario. Not bad for a few facts hiding behind a Play button.