Nihon Pro Mahjong Renmei Kounin: Tetsuman Menkyokaiden is a Mahjong simulation game developed for the Sega Dreamcast. Released in Japan, it features realistic gameplay mechanics and a variety of game modes. Players can engage in single-player or multiplayer matches, utilizing strategic skills to compete against AI or friends. The game emphasizes authentic Mahjong rules and offers an immersive experience for enthusiasts.