I took my time, played through the main game and the 2012 Demo, and it took me less than 2,5h. That being said, the world of this game is atmospheric and dream-like. I had fun, it was a nice excape from reality. On the other hand, the lurking sense of danger through the whole gameplay was not really something I was looking for - but as it is a part of the world, it makes sense. Artworks and music are beautiful, and puzzles not easy enough for me to remember all the steps in a year or two, so the replay possibility exists.
A short game with a fever dream-like narrative. 0% language, 100% understanding. The puzzles are very easy in general, at no point I was stuck or needed outside help. All things considered, it was such an adorable experience and a nice getaway from our current state of the world.