It is mindblowingly beautiful in places, and for the most part the puzzles are logical and well done. It is buggy though, I encountered a gamebreaking bug right near the end and had to restart the whole game as the save system relies on autosaves which you have very little control over. The replay, once you know how to solve the puzzles and don't stop to watch the scenery took less than 2 hours, so it is short. But damn, the ending did hit me in the feels...