Great books to encourage young boys to read more. Fun to read with them and for them to read on their own. Each mini-chapter gives you an option at the end and deciding on what you chose you are sent to a different section of the book. Can take quite a while to get it right, which makes it more of a challenge. Great idea, good story and lots of fun. We've bought many others including iHERO Immortals and iHorror.