The visuals look amazing, everything just looks super polished. 2.5D is a great choice offering enough complexity while still keeping it fairly simple. The synthwave-ish music combined with the sound effects gives a very relaxing experience.
The puzzles were pretty easy at first but then I just got stuck at the blue and purple gate and took a very long time to solve it. I think I just got lucky that a blue orb spawned very near the gate so while the gate was still open I quickly grabbed it and went in. I think that might not be the correct way to solve it so I think some text for hints would be very nice.
Other than that I really have no complaints, it's a fun and very polished game, great work!