In the game machine which includes a plurality of lottery machines having different lottery probabilities and executing a plurality of lotteries by a plurality of lottery machines selected as a predetermined combination among a plurality of lottery machines as a chance game provided in common to players, a plurality of station units is provided with a touch panel which receives an operation of the player. The game machine executes the lotteries by the plurality of lottery machines as the chance game in a predetermined order. The game machine changes at least one of the plurality of lottery machines into another lottery machine according to an operation input from the touch panel in case that a predetermined change condition is satisfied. The change of the combination of the plurality of lottery machines is applied to the chance game for other players playing the chance game.