The puzzle was interesting, the pixel art looks great, and I loved how creatively the puzzles were hidden behind various objects, that design choice really stands out.
However, after solving the first puzzle, I found myself stuck on the second one. Even after spending around 10 minutes searching, the only number I was able to find was 8. I couldn’t figure out the rest, so it felt a bit too difficult too quickly.
It might help if the puzzles started off a bit easier in the early stages, then gradually increased in difficulty. This is just my personal opinion, maybe others had an easier time, but I thought I’d share my experience in case it helps with balancing.
Aside from that, I think it would really enhance the game to include background audio and a simple menu with options to pause or exit. Overall, it’s a clever concept.