This is a great game, the fifth (there is chapter 0) in series of adventures of Liam and Reemus - two very funny characters who are so well made that they deserve a cartoon made after them. A must play.
I love the whole series - art, humor, characters, world-building, puzzls and Solutions are all on highest quality. I especially like the unlinearity of these games and how all of them have several endings and a good replay value.
This whole series put together is as long and good as any Commercial Lucas arts type of game, but it is free. There is also a Commercial game featuring these characters which I had to buy because this series is so cool.