To allow a player to sense that an internal winning state is set on a specific prize and to improve the interest of a game by increasing the rate for winning a game prize again when the display content of a display means achieves a prescribed winning condition.

The controller 50 of a game machine such as a slot machine is provided with an internal winning setting means setting an internal winning state when a prescribed internal winning condition is achieved for an internal winning object prize. When the internal winning state is set, it is made to be in a high winning rate state increasing the winning rate for its prize. When the internal winning state is set for a specific prize and a second internal winning feasible prize, a high winning rate state is obtained preferentially for the specific prize. The second internal winning feasible prize is a re-game prize allowing a player to play the previous game again. When the internal winning state is set to the specific prize, the re-game prize is controlled to increase the rate that the prescribed internal winning condition is met and the internal winning state is set.