This is certainly the hardest and one of the most original puzzle games I have ever played. If you are a casual player stay away from it. It'sThis is certainly the hardest and one of the most original puzzle games I have ever played. If you are a casual player stay away from it. It's not hard at the beginning but when you progress deep into the mountain it will **** with your mind really hard. The levels are very varied and some even crazy. But I never encountered something unfair. Whenever you fail it's your fault. Having that said, the game is really good in making you feel dumb and that is how I feel right now. I am not sure I can beat it. That is why it gets "only" a 9 out of 10.…Full Review »