Konami Holdings Corporation Japanese Hepburn: Kabushikigaisha Konami Hōrudingusu, commonly referred to as Konami, is a Japanese entertainment company. It operates as a product distributor (which produces and distributes trading cards, anime, tokusatsu, slot machines and arcade cabinets), video game developer and publisher company. It also operates health and physical fitness clubs across Japan. Konami is famous for popular video game series such as Suikoden, Castlevania, Contra, Dance Dance Revolution, Frogger, Gradius, Metal Gear, Pro Evolution Soccer, Silent Hill and Yu-Gi-Oh!. Konami is the twentieth-largest game company in the world by revenue.