This game is ridiculously good - so much so that I'm actually writing a review. Please PLEASE do yourself a favor and buy it - even full price! It's more than worth it.
I won't go in detail into game mechanics and whatnot (other reviews do the mechanics justice) but suffice it to say the claymation is well-done, the puzzles are interesting and often challenging, and the plot is very engaging. It's a great story! And while it's not a "scary" game, it is a deliciously disturbing one (I mean, it's based on dreams, of course it's gonna be disturbing, especially in the later chapters. I guess I'd say it's a similar feeling as watching one of Tim Burton's films, but with more blood, and a slightly more mature rating.) The only downside to this game is having to wait for the 6th chapter to come out. Rambling aside, 2 thumbs way waaaay up.