In 2004, Chaosium published the "Basic Roleplaying" monographs, a series of paperback booklets. The first four monographs ("Players Book", "Magic Book", "Creatures Book", and "Gamemaster Book") were essentially "RuneQuest" 3rd Edition, but with the "RuneQuest" name and other trademarks removed, as Chaosium had lost the rights to the name but retained copyright of the rules text. Additional monographs allowing for new mechanics, thereby extending the system to other genres, were released in the following years. Many of these monographs reproduced rules from other Chaosium-published "BRP" games that had gone out of print.