Patent ID: 8157636

Claim:
A game system, comprising: a plurality of game apparatuses; and a management apparatus connected with the game apparatuses via a communication network; wherein each game apparatus comprising: a drawing unit for carrying out a drawing to decide whether a specified prize is won or not in accordance with a predetermined winning probability when a predetermined drawing start condition is satisfied; a game progression control unit for controlling progression of a game utilizing the drawing unit; a mode changing unit for changing an operation mode of the drawing unit between a first mode and a second mode, wherein a winning probability of the specified prize in the first mode is lower than that in the second mode; and a winning notice unit for sending a winning notice to the management apparatus via the communication network when the drawing unit decides a winning of the specified prize in the second mode, wherein the mode changing unit of each game apparatus changes the operation mode of the drawing unit to the second mode at the same timing in each game apparatus, and changes the operation mode of the drawing unit to the first mode when the mode changing unit receives a second mode end information from the management apparatus via the communication network in the second mode, and wherein the management apparatus comprising: a decision unit for deciding whether or not the number of the winning notices received from each game apparatus via the communication network or the number of the game apparatuses sending the winning notice via the communication network reaches a predetermined number; and an end information transmission unit for transmitting the second mode end information via the communication network to all of the game apparatuses in which the drawing unit operates in the second mode when the decision unit decides that the number of winning notices or that of the game apparatuses, reaches the predetermined number.