A strange little side quest
Slinger Red Square belongs to a much longer story of play than a browser tab might suggest. Arthur Wynne published a diamond-shaped 'Word-Cross' in the New York World on December 21, 1913; the name later shifted to 'Cross-Word' and then 'crossword'. And the history keeps stacking up: In 1958, Tennis for Two used an analog computer and an oscilloscope to turn simple physics into a playable tennis-like demonstration. The details change, but the appeal of learning a system and trying again is remarkably persistent.