I liked the idea you were going for, but I had some issues in the game that prevented me from having a lot of fun.
- no explanation (I assume WASD was all movement there is)
- Audio only plays while moving
- in the molecule level, i could not move the drop fast enough to collect the molecules.
I would have love if you embraced the loop and restart the level after the molecules. Add a “round score” and let the player optimize it.