Patent ID: 8512128

Claim:
A game machine comprising: a game chance control device adapted and configured to generate at least one game chance that is allowed to establish a winning condition in a game provided to a player; a symbol arrangement control device adapted and configured to determine types of symbols to be arranged on a predetermined area on a game screen with a predetermined positional relationship according to the generation of the game chance; and a winning determining device adapted and configured to determine whether the winning condition is established based on the types and the arrangement of the symbols arranged on the predetermined area, wherein the symbol arrangement control device comprises comprising: a symbol drawing device adapted and configured to draw at least one symbol from symbol candidates including normal symbols and wild symbols; a symbol arrangement device adapted and configured to arrange the symbols drawn by the symbol drawing device on the predetermined area; a consumption condition determining device adapted and configured to determine whether a predetermined consumption condition is established in the game; and a symbol control device adapted and configured to control arrangement of symbols on the predetermined area so that when the wild symbol is arranged on the predetermined area, the effective range of the wild symbol is reduced every time that the consumption condition is established, and even if a new game chance is generated, the wild symbol remains on the predetermined area until the effective range is consumed, and when the effective range is consumed, the wild symbol disappears from the predetermined area.