Don't want to spoil anything but...
Why this game IS something exists in it's slight difference if you look at classic adventures, and somehow cleaner and better experience if you look at the Overture part of "story".
On the other hand, it really ISN'T so good because of maaaaany things... story is empty and hollow, gameplay is too straightforward and linear for my taste, "creepy feeling" isn't really so creepy because of very bad and cheap graphics, x-year old engine spoils any sense of reality mostly because of abysmal light calculations that are causing confusion every few seconds when you look around. Physics are implemented in an interesting and "almost-natural" way but still... can you maneuver 12ft long "piece" of steel in real life, just by holding its shortest edge with one hand... Nice try, but not even close to real life... OK, you can't move things when you are standing on top of them, but that's really all about reality in here.
Let's be honest: this game is one more nice release with decent playability and "something" different, but hey... I see here so much nines and tens... do you REALLY think THIS game is good enough for anything above seven???