As an experiment, that's vey good. You have a very unique idea, and I apreciate you going with it. But I'm really sorry man, I couldn't really enjoy this, sincerely :,3
The movement is pretty neat and not that hard to grasp once you figure it out, don't get me wrong, but it really is a little way too slow honestly, for most of the game you're really just watching your char slowly flying straight to somewhere you didn't want him to go at all, not to mention whenever he hits a corner he changes his ""rotation"", wich was pretty annoying considering you need him to be on the right position to go to places.
There's really a huge lot of potential here to make a cool puzzle-based exploration, but for that to happen the level desing will really need some overhauling. Pretty much every single tap on the arrow keys is essentially a blind jump, since most of the times the closest wall to your direction is waaaay ahead off-screen, It would have been just way better if you could always see exactly where you're gonna land on from any direction. That would have been easier to achieve if the game was divided by single screen rooms, but I think that's not entirely necessary, I believe you could keep the more open world while still getting a good level design if you made a few more iterations of it.
Also, the yellow pointy things REALLY look like spikes. I was very afraid of touching them the entire time, and only realized they were inoffensive once I messed up one time and ended right on the middle of one.
And honestly, the one thing that turned me off the most is actually kinda silly, but it was the music. It's just... off. It feels so needlesly eerie, almost like if it's something out of an horror game. It really made me very unconfortable the entire way throught. I'm kind of a guy powered by music, but unfortunatelly this time around that was a downside for me, really. No clue if that were your objective or not, but if it was then, good job! Iiiif it wasn't tho... then yeah... sorry x,3
(Also, the game crashed at one point, but I couldn't push myself onto trying again sadly, so I didn't finish it)
But hey, as you said yourself, this is experimental after all, and it's very welcome. I hope you or anyone else keeps on experimenting some more on this someday.