Nice take on a concept that was tried by many other entries: made me think of dissonance with those squares that show you the truth (the mirrors that gave you a breathing time in that entry). The game definitely needs some sound, at least music and a jump sound effect. The jump is a tad too short: you should make it longer and modular. Sometimes also if you are next to an edge and jump while trying to go against it, the rest of the jump's air control in that same direction doesn't work. You should also automatically move with platforms, it's very annoying. I like the visuals, very simple but give a nice atmospheric touch that would work great with, once again, audio. Menu is nice and simple. The game is too short however, it could have used a few more levels (with harder platforming challenges where a need for a higher, modular jump would really become apparent). Still a very nice entry, with an interesting one time reveal mechanic. I think you should explore more the avenue of levels that move around with a movement that somehow relates to the world that you are seeing. Maybe graying out the fake world when inside the reveal square would help players to make connections more easily when it relates to movement.
Good job!