A strange little side quest
If Back to Santaland: Merry Christmas sends you down a curiosity rabbit hole, start here. Alexey Pajitnov created Tetris in 1984 after drawing inspiration from pentomino puzzles, then simplified the idea around shapes made from four squares. The same trail leads to another fact: Atari's Gran Trak 10 from 1974 is recognized as the first arcade racing video game. Grombi files that under: small game, surprisingly large backstory.