Cool made puzzle/mystery game :-)!
It reminded me a bit of the old days and the Myst games. Point and click and try to find all the clues and solve the mystery. It had a dreamy mystery feeling that was very nice.
Puzzle was not easy, it was hard and difficult and yes I needed to check the walkthrough to get further but after that I found clues myself and that was very satisfying. The ending I also need to look up, but very clever made with the signs etc. But the challenge is also what makes it nice when you do find new stuff.
The controls worked smooth and the visuals were great and together with the audio and sfx it really gave that dreamy adventure ambiance. No UI to be seen and the theme was at first not so clear but with the philosophy later in the game certainly checked.
It was a bit long for a game jam game (especially because as host I want to play them all), but together with the walkthrough I could do it fairly fast. But if it was not a jam game, the hard puzzles and long play only are extra bonus points like the old Myst kinda games. Well done!
Overall a very well made game in our jam period and fun to play and to get further into the mystery and satisfying when you find some piece again. Keep it going for the next one :-)!