The LEGO Ultimate Collector's Series represents a specific category within the broader LEGO Star Wars collection, encompassing all six films of the Star Wars saga. These Ultimate Collector's sets are designed with a significantly larger size compared to typical sets, mainly focusing on individual spacecraft from the films. Since 2000, numerous sets have been introduced almost annually. A related subtheme, known as the Master Builder Series, debuted in 2018 with the introduction of 75222 Betrayal at Cloud City. The Ultimate Collector's Series is primarily geared towards showcasing, whereas the Master Builder Series, while maintaining an intricate construction process, is designed more for interactive play.