Really interesting idea and really wonderful and clean execution. The polish is really nice and I just love those sound effects and the little touches, like the platforms lowering. The simple art style is calming. Although the game is missing music, I actually do like it how it is now, and the wrong music could ruin that feeling.
The puzzles are nice, especially the last one: it makes you think a little bit! I do think that some of puzzles, namely 1 and 2, can be solved just by inferring from the level design that you have to go there because that's the only way you can go, instead of doing the interesting thinking about dice rotations, This is fine for starting levels, but in the context of the few number of levels, it can feel off. Though, I had fun playing this. Of course I wish there were more levels, but designing puzzles for this seems tricky and like it would take up time you don't have in a jam, so completely understandable. Perhaps another mechanic that plays off this could spice it up?
There does seem to be a glitch with the detection of holes: if you match a spot, but a rotation to move will make the platform disappear, you can still move, and you fall through and restart, as opposed to when you don't match at all, and it simply does not let you move. Either way is fine, but it feels strange being inconsistent, especially given that you can't walk off a platform and fall in a different way.
A side note, I am a big fan of your main menu design.
All in all, great game with really nice, clean graphics and juicy sound effects!