Interesting concept, and a fun little game. The rain sounds were well done and very soothing. The victory dance and song was also great.
The rain bar is a bit clunky, but I got into a rhythm pretty quickly. It’s cool to see your stack of sorted drops all fall in line :) Some way to gauge progress in the level would be nice.
Nitpick - the menu should be controllable by keyboard, since the entire game is keyboard
Overall - well done!