A nice escape room, with some solid puzzles and an interesting story.
Art Direction: I like the chibi style of the characters, but I find the overall visual style a bit all over the place. You have pixel art, but you also have pictures, there are too many different fonts, and the UI feels like a placeholder.
Controls/UI: pretty solid and easy to play. UI could use some work to be more clear and coherent with the rest of the game.
Audio: both music and sound design help in setting the mood.
Game Loop: game loop is solid and fun. Puzzles are engaging and tease the player's brain. I love the punishment for trying to guess a puzzle solution, or when checking something you shouldn't have. The hint system is nice, and the dialogues with Moriarty are engaging.
Overall I've really enjoyed it, but I think the visual style could use some improvements to make everything tie up together nicely.