First game I've played this jam! One of the reasons is because I get to play on my phone.
Really good game idea. In last year's jam someone had the same mechanic where the pieces break like that. It was satisfying but made the game trivial with Tetris rules. This concept solves that trivial issue and makes it into a much more engaging experience.
The graphics are clean and performance is good on my old phone.
Only suggestion would be to include a dedicated hard drop button.
Excellent job!