A strange little side quest
If One Line Rivals sends you down a curiosity rabbit hole, start here. Atari's Gran Trak 10 from 1974 is recognized as the first arcade racing video game, decades before modern 3D racers. The timeline takes another interesting turn: 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'. That gives One Line Rivals a little more company than it first appears to have.