https://kimiyoribaka.itch.io/tmoftr

The Mystery of the Room is an experimental puzzle game based on a simple concept: what if the puzzles have already been solved? The player is presented instead with two goals: 1. figuring out what the solutions were from the muddled state each puzzle was left in and 2. learn why the puzzles are there in the first place.

Be warned, though. There may be sinister things lurking under the surface.