The theme was launched in 2010 as a successor to the former Lego construction theme Bionicle, which ended its run earlier that year. In its legacy, Hero Factory utilized the building system used in Bionicle before going on to create its own. The theme was discontinued after 2014 in favor of reviving Bionicle.
Is Mata Nui a real island?
Although the name of the island is indeed of Polynesian origin (see trivia above), there is no Motunui island in real life. The filmmakers chose to create a fictional island in order to equally represent and honor the Polynesian peoples and their cultures without giving clear preference to just one in particular.