Clever and fun!
I enjoyed the visuals, although I think that some sort of more stylized... style might've worked better [perhaps using a sort of cell-shaded shader] as the textures did look a little cheap. I enjoyed the notes that played when the dice rolled, although I think that sometimes the note was double played when dying, which was a bit jarring. The UI was simple, but quite effective, I liked that you had scaling for different resolutions and a fullscreen option - just some good ol' QOL features, which are often missing from gamejam submissions.
The main mechanic was clever and quite intuitive, and I enjoyed the puzzles, however I often had to resort to just guessing, as I often just didn't know what side I would land on because I don't have the numbers on a dice memorised; perhaps allowing the player to rotate the camera, or to have a floating cube model which you can rotate and look at all the different sides without having to guess would greatly improve this game's fun factor as it would allow for the player to actually thinking about their movements. Regarding the difficulty curve, it felt like lvl 3 should've probably been the final level, as, at least to me, it seemed like the toughest one with a lot of ways to fail and it and it also felt quite unique and different from the other levels, with it being so compact. I did also feel a little cheated when I worked out a solution and ended up not using half the addition/subtraction pads, although I do understand that they server a purpose as just showing only the needed pads would make the solution quite obvious - a not so easy solution to implement would be to focus more on non-pad levels and just designing the tiles in a more tight way, but I do understand that that is easier said than done.
Overall I really enjoyed this! Thanks for making this, and good luck on the jam, I hope you get somewhere high!