The LEGO Star Wars Master Builder Series (MBS) subtheme is an offshoot of the Ultimate Collector Series (UCS). While Ultimate Collector Series sets are more designed for adults and display, Master Builder Series sets are intended to be large direct-to-consumer sets aimed at both children and adults.
The LEGO Star Wars theme which was licensed and released in 1999 is based on concepts from the Star Wars franchise of films, comic books, video games, cartoon series, and other sources. The theme currently covers all main films, the anthology films, animated movie and TV series as well as the extended universe.