Abstract: An online mahjong gaming system for a plurality of users each has a game client communicating with a game server. The game client displays a mahjong table having four player positions, a deck of turned down mahjong tiles and a row of turned up mahjong tiles visible to the user at each player position but concealed from the other users. The mahjong table has a display portion displaying turned up mahjong tiles which have been discarded. The game client displays an allow icon to the user at the player position indicating that a viewer desires to view the game. The game server is configured to link the game client of the viewer to the mahjong table to display the mahjong table to the viewer with the row of turned up mahjong tiles of the player who selected the allow icon being displayed to the viewer.