Can you add a sound effect when a power up is dropping? And if you have purchased the alert with shards, some sort of buzzer sound effect when that alert starts?
Awesome game. One suggestion: give the player a few seconds after failing before taking away the % complete. When I fail on a fast 3-beat, the game counts my last 2 button clicks as my approval to start the level over without me even seeing my % complete.
will add something like this in the next update