World Series Baseball '98 is a traditional baseball simulation video game by Sega, released in North America and South Korea for the Sega Saturn and Sega Genesis as a sequel to World Series Baseball II. The game was first released in Japan under the title Pro Yakyū GREATEST NINE '97 (プロ野球 グレイテストナイン'97, Puro Yakyū Gureitesuto Nain '97) which used the Nippon Professional Baseball license.