The Assassin's Creed series, by Anton Gill, Andrew Holmes, Christie Golden, Matthew J. Kirby and Gordon Doherty is a collection of novels set within the Assassin's Creed video game universe. The books are set across various time periods and, like the games, revolve around the secret war fought for centuries between the Assassin Brotherhood and the Templar Order. Most of the novels are direct adaptations of one of the games, with several added or slightly modified elements.