A strange little side quest
A quick detour while Mine Sweeping waits for your next move: The first crossword puzzle book appeared in 1924 in a cautious initial printing of 3,600 copies, complete with a free pencil. The surprising part is how quickly the next milestone followed. 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.