World Stadium (full title: ), is a series of baseball arcade games that were released by Namco in the late 1980s and 1990s; they were spin-offs of the Family Stadium franchise, inspired by the 1986 Famicom game Pro Yakyū Family Stadium, and its sequel Pro Yakyū Family Stadium '87. Except for Great Sluggers '94, which was also released in America, all of the games were exclusive to Japan. Namco System 1 era (1988–90) The first three titles in the series, (1988), (1989), and (1990) all ran on Namco System 1 hardware, and featured twelve teams from the "Urban League" (the Giants, Cars, Drasans, Sparrows, Wheels, and Titans), and "Country League" (the Lionels, Bravos, Hornets, Fires, Orients, and Buckaroos); they also featured three stadiums for matches to take place in (Kōrakuen, Kōshien and Mejā). The first two of these stadiums' scoreboards had clocks which started at 6:00 and advanced as the matches progressed (but broke at midnight), and the third stadium's scoreboard also featured the logo of Namco's United States distributor of that time period - Atari Games. World Stadium was Japan's second highest-grossing arcade game of 1988. It went on to be Japan's seventh highest-grossing arcade conversion kit of 1991. Namco System 2 era (1991–93) The next four titles in the series, (1991), (1992), (1992), and all ran on Namco System 2 hardware; the first of these featured sixteen teams (the Lionels, Buckaroos, Fires, Orients, Giants, Cars, Wheels, Drasans, Sparrows, and Titans from the first three titles, as well as six new teams: the Blue Arrows, Homes, Orbies, Fifties, Nationals, and Americans), but the other three featured the twelve (real-life) teams from the Japanese Central and Pacific Baseball Leagues (the Seibu Lions, Kintetsu Buffaloes, Orix BlueWave, Nippon-Ham Fighters, Fukuoka Daiei Hawks, and Chiba Lotte Marines of the Central League, and the Hiroshima Toyo Carp, Chunichi Dragons, Yakult Swallows, Yomiuri Giants, Yokohama Taiyo Whales (later the Yokohama DeNA Baystars), and Hanshin Tigers of the Pacific League). They also featured four stadiums for matches to take place in (Dome, Kōshien from the first three titles, Seaside and Manhattan) - again, the first three stadiums' scoreboards had clocks upon them (the third was digital), but they were broken (and the first two were stuck at 6:00, while the third just displayed the colon between the numbers). SWS '92 G also introduced a "FAVOR" setting in its options menu. Namco NB-1 era (1993–97) The