A strange little side quest
A quick detour while Aqua Friends waits for your next move: 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'. 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. The screen is modern; the urge to test skill, pattern and timing definitely is not.