Hero Factory (stylized as HERO FACTORY) was a line of construction toys created by the Lego Group marketed primarily at 6-to-16-year-olds. Premiering in the summer of 2010, the theme was created in response to the decision to close down production of the formerly-popular Lego construction theme Bionicle and acted as a successor. In its legacy, Hero Factory utilized the building system implemented into Bionicle before going on to create its own. Hero Factory was discontinued after 2014 in favor of reviving Bionicle.