I can't run the game, I'm getting the error:
Failed to initialize player
Details:
Failed to load PlayerSettings (internal index #0).
Most likely data file is corrupted, or built with mismatching
editor and platform support versions.
I was able to run it this time
I love the visuals and spinning upside down mechanic but I couldn't figure out how to open the second door (I assume I was supposed to put the cube somewhere but I didn't see where)
I was able to fly anywhere by repeatedly pressing Q so maybe you should make it so you can only spin when standing on the ground. I was also able to fly by holding the cube and looking straight down.