Interesting twist on the theme! I liked the overall vibe and visuals. the puzzles did kind of feel either very obvious or very obscure. I couldn't solve the puzzle in the first fake chest room, the "winner winner chicken dinner" room, or the lone mountain room, so I just tried a couple till i got them.
Also 8/ 2(2+2) is one, but was the solution door, and all of the doors in the math room solved to one. Not sure if thats a bug.