This is so fantastic- The atmosphere is very polished and the gameplay is so much fun (I personally loved the 'manipulation' gameplay over the word puzzles, but that's just my preference). The OST reminded me of VA-11 Hall-A at times, it created such a nice ambience along with the really sweet art style. Some of the dialogue went towards 'abstract' or even slightly pretentious(?), but that's not to say it wasn't my cup of tea at all.
Mostly, I just love the concept altogether. The very many endings are a great touch too, it makes the "tactics" you use as a player feel very personal.
EDIT: That being said, I have yet to obtain every ending- word riddles are not my forte, embarrassingly. It might be helpful to have a puzzle guide available!