Love the aesthetic and overall vibe of your game. The puzzles were definitely pretty interesting and not as straightforward as I thought they might've been.
One thing that really annoyed me throughout is that the diagonal perspective really screwed with how my brain perceived which control meant which direction.
I understand that this perspective really helps with giving the player an idea of where the faces of the die are at but its very annoying when your die doesn't move the way you want.
Just an idea, consider having a more straight perspective and let the player slightly turn the camera to each side (maybe with mouse movement) so that the controls feel smoother, but still give the player just as much, if not more, information than it does now.
Overall though, I really enjoyed your game!
:>