Nicely done! I watched Mark play this on stream and had to try it out for myself. I really liked your small puzzle design. Each one felt attainable without being too easy as to be boring.
The 'tutorial' paper at the start was a really nice touch. Those sorts of intuitive teaching moments are great when you can incorporate them. I understand why you went isometric (you can see more sides of the die, right?), but using wasd for that felt pretty awkward. I had a lot of problems even navigating these small puzzles. Maybe including a wasd key in the corner of the screen could help alleviate that?
Thanks for making this cool little game. Keep making games!