Thanks for all the feedback and for taking the time to play my game.
I'll definitely implement changes to make the example dice much easier to understand.
And Ill also try to add more to the music, although I don't think I can do anything about how synthetic it is right now because of the software I'm using.
And I've been thinking of ways to expand the puzzles, and unfortunately, I haven't thought of a whole lot I can do. I've thought of different mechanics like trap doors with pressure plates and teleporters, but although I could make many more levels with these, I don't think they would fix the inherent restrictions with the genre, as you said.