Konami Holdings Corporation (コナミホールディングス株式会社) is a Japanese producer of numerous toys, trading cards, anime, tokusatsu, slot machines and arcade cabinets, and a developer and publisher of video games. It also operates health and physical fitness clubs in Japan. Konami is famous for popular video game series such as Castlevania, Contra, Dance Dance Revolution, Gradius, Frogger, Suikoden, Ganbare Goemon, Metal Gear, Mirmo, Beatmania, Pro Evolution Soccer, Silent Hill and Yu-Gi-Oh!. The 2012 purchase and absorption of Hudson Soft resulted in the addition of several other popular franchises, including Adventure Island, Bonk, Bloody Roar, Bomberman, Far East of Eden and Star Soldier. Konami is the twentieth-largest game company in the world by revenue.