Hello, played all levels, interesting game! I can tell that puzzles were easy, I hope new puzzle elements will be in your game. Right now its more platformer, but it feels nice.
On game page I read that those boxes with yellow particles will be very valuable. What I think that they should be in smaller amount, and also sometimes when bumping from big yellow box, it doesn't collect this essence, so they just fly away.
Also I didn't realize that you can swap boxes by pressing button. It may be not that important, but I think this mechanic shoud be more integrated (right now just first level uses it, how about start using swapping from second level, and first level dedicate fully on one box movement and so on?)
Have a great development time!