The target audience of the Twilight series is mostly teenagers, especially girls, as the films are based around stereotypical first love that teenagers can relate to. The book series started the sensation and built a fan base that increased the popularity of the subsequent film adaptations, which spread the franchise worldwide. Merchandise like clothes and accessories featuring Twilight themes are marketed towards teenage girls, while games based on the films advertise the franchise to game console users. Posters and interviews in magazines, especially teen magazines, helped advertise the films, along with radio broadcasts that interviewed the actors.