I think in sensory info you should've also put flashing lights.

I don't agree with the classification as a "puzzle game", nor the usage of the word "gravity" here. What I got from trying to play it is that the player is expected to react really fast to whatever is going on immediately and then always be prepared for shapes they can't see to float off somewhere. That's not to say it's bad, but your description gives entirely the wrong impression.

I will, however, say that the dark levels are bad. In particular, I got up to a level in which there were a bunch of shapes in the darkness I couldn't interact with that immediately caused a failure before I could do anything about it. The result was the darkness coming and going repeatedly until I quit out.