Imaginalis is a young adult fantasy novel written by author J.M. De Matteis, and serves as something of a Spiritual Successor to Abadazad. The origin of the book is rather interesting: After Abadazad was Screwed by the Network for a second time, De Matteis received an interesting idea; specifically, the idea of book characters being trapped in Limbo. One thing led to another, and Imaginalis was created.