A strange little side quest
Between one round of Blocks Fill and the next, this is worth knowing: The first crossword puzzle book appeared in 1924 in a cautious initial printing of 3,600 copies, complete with a free pencil. That old idea kept changing rather than disappearing. Street Fighter II, released in 1991, turned head-to-head arcade fighting into a worldwide phenomenon and helped define the modern fighting-game genre. So a round of Blocks Fill is not just a quick distraction; it is a tiny stop on a much longer puzzles timeline.