This is a really unique concept and great execution! It has a bit of a learning curve, but once you get into it, it becomes quite fun. The indication of where the die will be if you pick a direction is really helpful and a really great touch.
One thing I would suggest is spicing the game up a bit more visually. I love green, but there is a lot of it. One way you might do this is by having different colors for different sections of levels, perhaps that are thematically linked.
I also think that once you get stuck in the game, it can be hard to get unstuck without iteration, so it could be helpful to have an undo button and a quick restart button.
All in all though, awesome job! Good work!