In author comments, a "how to play" would be welcome, with particularities of each balls too. We're released in the nature without knowing how to do to pass a level, how it reacts, and instructions in levels are too short to understand them. Tell how to play, i didn't knew we had to "only" click with mouse to play (to change ball color exactly), i thought first we had to use keyboard keys (wasd).

I'd like to say the menu is too minimalist anyways, the music is not bad at all. A bit more work for next time

Could use a short tutorial to explain the three balls' behaviours, and explain what the blue/yellow/beige areas represent. Also, the colors for the three balls should be more easily recognizable than green/teal/blue.

nothing extremely new. I would use key numbers to shift balls.

Very good! Keep your good work.