That depends on which series you are talking about! The original Ubam book series consists of six books; Ubam: Books I-VI. These books follow the adventures of brothers Ubam and Salom and their friends as they explore the magical world of Ubam. The series was written by the author Caleb Nobles and follows the boys on their wild and exciting adventure.
In addition to the original six books, there are two spin-off series titled "Ubam: The Next Level" and "Ubam: Uprising", both written by Nobles. The Next Level series consists of two books, whilst Uprising consists of five books. That makes a total of thirteen Ubam books written by Caleb Nobles.
For fans of the Ubam books, there are also two Ubam board games, a Ubam card game, four collections of short stories, and a role-playing game. So if you include all of these, there are certainly more than thirteen Ubam books in existence!
