It's a real mind-twister sometimes, do not look up a walkthrough and ruin your game. Most of the puzzles are really easy but there are a few that will keep you stuck for hours, you need to think it all through and then it hits you, this must be the solution. One of the puzzles was a complete hit-or-miss though, only by accident I found the solution after being stuck for 5-6 hours. The game ends quite abruptly, but in general this is a old school PnC in good and bad. The art style was not exactly into my liking, but works fine.