I consider this game being to our times similar to what Another World supposed in its moment (even the five keys to control the character are the same!). It's unique and excellent, and you should buy it for this: you will never see again another game like this. The impressive graphic style makes you feel as if you were watching a dream (a nightmare!). The quiet, precise sound effects enhance the sensation of solitude against your fate. There are no words, no spoken story, just sound and graphics. The story is built alongside a series of sequential puzzles-on-platforms: you finish one puzzle, you start another, you finish this and start one more, until the end. Just one at a time. This may sound dull, but the nature of each puzzle turns the gameplay exciting. You have to think in things from "physic behavior of objects" to "psychology of living creatures". And there is always one more turn of the screw until the end. So this game deserves a 5 over 5 in every aspect: design, atmosphere and programming. A radical must.