Yeah it's made of paper, but it's a unique and very challenging game. Worth the penny.

It's a very creative game for creative players. There will be some levels you solve in your sleep. Don't ever watch youtube walkthroughs until you solve the level yourself. Then it will be much more fun to see other different solutions. Greetings to Petri who made this awesome game by himself.

This is the best game I ever played in my whole 28 years-life. It has the most original idea among all other kick-ass games which all look alike. In this game your strongest weapon is your own brain. You have to think, plan and then act very carefully. Action, adventure, puzzle, and most surprisingly "dark humor" all in one game. I recommend it to everybody who like to use their brains. Thanks to Valve. But come on guys, we have been waiting 4 years for a sequel!