Glimmer Tetris just got a High Score dialog (replacing the Game Over dialog) and got enhanced to save/load high scores to/from disk (tab delimited format). It uses the user directory (dumping a .glimmer-tetris/high_scores.txt file) to use the same security permissions as the current user. If writing fails for any reason, it fails gracefully, defaulting to memory storage of high scores.

http://andymaleh.blogspot.com/2021/01/glimmer-tetris-high-scores-more-menus.html