I managed to get up to level 5! just cannot make that jump at the end. The visual presentation is wonderful, you've provided a really effective contrast with the music and look of the second dimension. I did find the platforming a bit frustrating at times, the gravity feels like it's set *really* high for what's ostensibly a puzzle platformer? Flip side of that is it does feel quite satisfying when you complete a level
Two things I also wanted to ask about because I'm not quite sure if they're bugs or intentional design : A) Are spikefloors meant to still be dangerous even when wonder-ified, and B) is not being able to jump on crates intentional. I found you don't ever need to actually jump off of one for a puzzle but there's a few times they're used as elevators?
The variety of mechanics you've got for the different levels is quite impressive, and having your key mechanic be an on/off switch for them is a clever through-line. Despite my struggles, I found there's some really solid elements here. Nice work with this one