"Sonic"'s success led to an extensive media franchise, with the first of many sequels, "Sonic the Hedgehog 2," released the following year. It has generated dozens of additional games and a large cast of recurring characters, keeping Sonic and Robotnik (later renamed as Eggman) mainstays, and continued beyond Sega's exit from the console industry after the Dreamcast. The series has ventured from platformers to fighting, racing, role-playing, and sports games, and also expanded into anime, manga, cartoons comic books, novels, and toys. "Sonic the Hedgehog" is one of the best-selling video game franchises of all time, with over 140 million copies sold or downloaded worldwide across consoles, PC's, mobile phones and tablets by May 2014. The game's first level, Green Hill Zone, has been seen in later other games, such as "Sonic Adventure 2", "Sonic Generations", "Sonic Mania", "Sonic Forces", and the "Super Smash Bros." series.