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Sega Yon-nin Uchi Mahjong MJ (2.5.02)The first installment in Sega's MJ series of Riichi Mahjong arcade games. Although the game initially only supported local play with linked cabinets, it would later be updated in 2003 to support online play. Online service was discontinued on March 31, 2005.Please enable JavaScript to add this game to your collection