Great game! I have to agree that a “game over” would be nice.
I noticed a bug: ghost, sash, and shake options do not save when you quit the game. I find shake distracting but I have to remember to turn it off every time I launch the game.
Only other thought is I’d love an easier difficulty: the fall speed goes up really quickly and I’m not very good at Tetris lol.
Great work, I’m definitely going to play this a lot.