(Excuse my english, it's not very accurate).

Great game. If you enjoy games like both Portal 1&2, QUBE, Antichamber, The Swapper....you should get this one.

-Story: a bit "simple", characters are not memorable, voice acting could be better...but is sufficiently interesting to keep you playing and looking for more. The end it's very well executed.

-Gfx: surpringsily good. Great scenery design and good performance. You can change FOV in menu options (not many modern games can say that).

-Music: good but it gets repetitive sometimes, specially if you takes much time during a puzzle.

-Controls: great, i played with xbox pad (native support) but it plays perfect too with keyboard+mouse.

-Puzzles: in general they are good and challenging, but some of them are a bit of annoying and not that fun, but for most, they are very interesting and can be done in differente ways.

This game is a solid 8 for me.

PHEW. This be hard. I know I'm close to the end but juggling these platforms is tough.

Good stuff.

How did you do the second platform juggling puzzle toward the end? For the life of me I just can't figure that stuff out.

I turned every platform red. started going up using red newtons, then a few green newtons below to "up" the other side. Then I continue using reds until I could not advance anymore... (there is a piece of wall on the left side and placed a red newton there). Once you get there, use a green newton on the lowest part of that same wall and it should take you further up. Jump to the right, use red again on the wall on that side and repeat. It was literally the most annoying puzzle ever.

Yeah... that was one of the most annoying levels for me, too. (The other is where I had to go up in an elevator shaft using the three platforms placed vertically above each other - mostly beacuse I thought that i MUST get the box up there with me and took me hours to achieve that only to find out that it wasn't needed.)
Aside from that, I found it a great logical game, however, with a nice horror touch.

(spoiler!)

Confronting with the full image of Cthulhu among the stars was a delightfully awe-inspiring, WTF moment.

I really like antichamber and the swapper but i couldnt like this game :/