To realize a technique which enables the providing of online games to meet the intention of players.

The lobby as racing ground of a plurality of players is presented being divided into a plurality of playing zones according to contesting conditions of games and playing zones desired by the individual players are selected from among the plurality of playing zones presented and playing rooms desired by the individual players are selected from among the plurality of rooms prepared for the selected playing zones. A playing table which lets the individual players participate in is reserved from the plurality of tables prepared for the selected playing rooms. Playing information containing at least the number of participants, playing rules and players' information are presented per playing room or per playing table. The contents of the playing information presented are set and altered and when specified information out of the playing information satisfies playing conditions, a game is started.