Did you like Fez or Myst/Riven? Did you like Braid? They very much have lots in common with this game. If they appeal to you this one will. I think Undertale would qualify, too, in a way. And Layton.
It’s only tracing lines from A to B, in the same sense that Dark Souls is only about killing your opponents. Very much so in many respects. Does that appeal to you?
Are you the kind of person who likes the idea of not looking at any walkthrough for 20-30 hours at least, instead just doing something else when you’re stuck? Being FAQ-free and liking it is very much a prerequisite for enjoying this game IMHO. The design is nonlinear and nontextual so you won’t get much in the way of explicit story to drive you along. You’ll be on an island covered in puzzles and will have to work with that.
It’s also a masterclass in game design, in particular puzzle design, and teaching by example. It’s very much a game for game designers, possibly more than for gamers. It’s more interested in you understanding than you winning. Trying to win instead of understand will make the game less enjoyable. And while this may sound arid, the flipside is it is very much interested in giving you that moment of pure mental joy that comes with understanding, again and again and again.
It seems it would also be interesting for non-gamers, people who like to play on tablets and have no expectations about plot or forms of reward more specific to “normal” videogames.
Do you like the idea of mystery, of not knowing what comes next or whether there is, in fact, a second castle?
It’s without a doubt the most interesting thing I’ve played recently, too, easily ranking above Undertale and MGS5 which both are games I really like.