Tel-Tel Mahjong is a Sega Mega Drive Mahjong video game that was released exclusively in Japan in 1990. Part of the Tel-Tel series that included Tel-Tel Stadium, it was one of the few games that used the Mega Modem, allowing for two-player games via the Sega Net Work System. Up to three players can play the "host" player in addition to being able to play against computer opponents.