To provide a game machine enabling a player to easily select a desired game.

A slot game machine 10 is provided with a specification value setting means for setting a plurality of specification values used as control conditions in performing game control, to optional values within a fixed range. The slot game machine 10 is further provided with a game condition input means for inputting input values desired by the player in playing the game, which are conditions different from each of the plurality of specification values; and a specification value changing means for changing the plurality of specification values based on the input result of the input values inputted by the game condition input means, according to the contents of the input values. The specification value setting means sets the plurality of specification values changed by the specification value changing means, as the control conditions.