Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Challenging Game

This game is challenging and almost to the point of frustration at times. But really, they did a fantastic job in getting me engrossed in the game.Pros: Puzzles are challenging but if you follow your gut you will perservere. I had to read a lot for this game. Although this will sound nuts, I felt smarter after playing this game.It got me addicted. I went through stages: from Addiction to Intrigue and then to anticipation of wanting to beat it.Cons: I was hoping for more of a scary feel. At times you may feel a little creeped out, but nothing more. A few (4 out of 38 or more)puzzles did frustrate me.Tip: Buy the game if you like detective work (the constant studying and keeping your mind open) and you like forensics (not the study of dead people but the pragmatic approach of seeing the result and looking everywhere for the cause), if you like details.Look for hints and beware of forums that don't hide spoilers. The game is much more fun when you don't cheat.