Extremely satisfying and great for focus. I legitimately think this game will make you smarter. I want all my friends to play it even though I know most of them are gonna bounce right off it.

This game is notable for having maybe the greatest mechanical-depth-to-input-complexity of any game I've ever played. It's crazy how deep this game goes. I also think the puzzles are overall well-designed, and pretty "raw" in that they have 1 central idea with no padding (minus 1 or 2 stinkers that waste your time). Many times I was convinced a puzzle was impossible, only to gain the knowledge necessary to overcome it.

That said this game is not for the faint of heart -- it is for hardcore puzzle enthusiasts. It's difficult puzzles, that you can't skip, with no sugar to help the medicine go down. I played through it all without any hints as a personal challenge to myself, and found it rewarding as a challenge, but it's not a "fun" game. This game also doesn't let you skip any puzzles to advance; the merits of that are debatable, but I think the rigidity hurts the game.

If you consider yourself a puzzle game enthusiast, I recommend it on sale, but I do recommend it. $30 is pretty steep considering it's a relatively ugly no-frills experience that curb stomps you relentlessly.

sosij