A strange little side quest
One reason puzzles keeps producing good game ideas around Santa Math is that its history is full of strange turns. 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'. It also connects to a different milestone: Reader Rabbit's 1986 arrival was part of a major expansion of educational computer software before the CD-ROM boom of the 1990s. That is the kind of background detail that makes another attempt at Santa Math feel a bit more connected to the history of play.