To provide a game machine that can suppress an increase in a pre-stored data amount and increase in kinds of jackpot games.

The machine includes: a unit number-of-games storing means for storing the number of unit games for each type of a specific game; and a number-of-first open modes storing means for storing the number of the unit games involving an open in a first open mode, for each type of the specific game. A specific game control means for controlling the specific game includes a number-of-second open modes decision means for deciding the number of the unit games involving an open in a second open mode in the specific mode, on the basis of the number of the unit games executed in the specific game and the number of the unit games involving the open in the first open mode in the specific games, for each execution of the specific game.