I hate books that leave me wanting for more, with no planned sequels. At 239 pages, Interworld is one of the shortest books that I have read and does exactly that. Written by Neil Gaiman and Michael Reaves, Interworld tells the story of a young boy who has the ability to travel to any world in any dimension. Throughout his travels, he learns and meets aliens the specialize in magic and science, and how a war is brewing between the two. He also learns about danger, teamwork, and friendship and what it will take to stop the war.

As it may be obvious, this is a science fiction book. It essentially builds the concepts of the various species and worlds in the readers mind, but does not have the length to significantly elaborate upon them. Through sequels, the authors (or new ones) could develop and explore the worlds more, and take the reader on longer, more elaborate adventures. Interworld is written in such a way that the current protagonist need not necessarily be the central figure in any future novels.

People who enjoy this type of book will love the Well World series of books by Jack Chalker. I will post a review about them soon, but I have to re-read them to refamiliarize myself with the story.