Played this on casual/easy mode and found it to be relaxing and interesting game play. Sparkles, but not overly annoying or intrusive. More HOGs than puzzle games and the puzzle games can be skipped.
Storyline was a bit different, which to me was a definite plus. Not for everyone as it has a very strong occult theme and there are some "unpleasant" scenes that some people may not like. I'd recommend trying the trial first as that will give you a good sample of the game because that's the worst it will get.
Decent length. Did find some of the HOG scenes a little difficult to see, but nothing too bad that using the odd hint wouldn't resolve.
The story kept me going and what I really enjoyed was the fact that I wasn't running around as much as we do in some games. There's a bit of back and forth, but there's a handy back button rather than sneaker wear.
Definitely worth your time, but unless you are sure that occult/somewhat scary scenes are fine with you, try the trial first. Glad I bought it.