Got stuck at the puzzle with the ticking doors :(. Loved the environment though, I'm a sucker for endless libraries. Awesome for a solo entry! If you plan on expanding on it, maybe some more interesting architecture could be nice. Some Escher alongside the Eco and Borges inspirations.
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I'm glad you liked the environment! It's probably more important than the puzzles, even if it is very artisanal. Yes, the rooms definitely need some variety. Even some randomization in the layout and bookshelves would have helped a lot, and different architecture like hallways and stairs would be ideal. I'll definitely try to improve this game :)