I have been playing the Virtual Villagers series for about six years now since I was nine or so. These have been my absolutely favorite games for my pc. I am rarely allowed to buy any games but two I have are The Tree of Life and Lost Children. The level of challenge is very high on any Virtual Villagers game. Even if you do figure out all of the puzzles, it is very easy to forget how to specifically accomplish each one, which makes it like playing the game all over again. The fact that you can control so many characters at one time is another factor that adds to the entertainment of the game. I would highly recommend this game or any of the other Virtual Villagers games to any prospective buyers. They are very cheap and very entertaining and worth every dime.