Gaming machine running common game

1. A gaming machine comprising:

a plurality of gaming terminals each having a terminal controller programmed to execute a step (a1); and

a center controller which is programmed to execute steps (b1) to (b4),

the terminal controller executing a step of:

(a1) running a basic game independently from the other gaming terminals, and the center controller executing steps of:

(b1) determining whether a predetermined common game condition is established;

(b2) when the common game condition is established, randomly selecting a common game from a first common game, a second common game, and a third common game;

(b3) running the common game that was randomly selected in step (b2); and

(b4) if the first or second common game is randomly selected in the step (b2), and run in the step (b3), then randomly determining whether to run the third common game, and if yes, running the third common game.

2. The gaming machine according to claim 1 , wherein,

in the first common game, a participating gaming terminal is able to win a bonus type more than once and a payout based on a unit payout amount corresponding to the bonus type that the gaming terminal wins is awarded to the gaming terminal.

3. The gaming machine according to claim 1 , wherein,

in the second common game, a participating gaming terminal is able to win a bonus type more than once and a payout based on the number of winnings is awarded to the gaming terminal.

4. The gaming machine according to claim 1 , wherein,

in the third common game, one of a plurality of participating gaming terminals is able to win one of the bonus types and a payout is awarded to the gaming terminal which wins said one of the bonus types.

5. The gaming machine according to claim 1 , further comprising:

a plurality of upper displays which are provided in a parallel manner independently from the gaming terminals so as to form a single common effect display screen on which a plurality of individual images corresponding to the respective terminals are displayed,

each of the gaming terminals further including:

a terminal display on which the plurality of symbols are provided, the terminal controller further executing a step of:

(a2) displaying an effect image on the terminal display based on a common game start effect image display command transmitted from the center controller,

the center controller further including:

an image storage unit which stores a common game start effect image displayed on the common effect display screen, and

the center controller further executing a step of:

(b5) when the common game starts, displaying the common game start effect image on the common effect display screen and transmitting the common game start effect image display command to the gaming terminals to display the common game start effect image divided for regions of the respective gaming terminals on the terminal display of each of the gaming terminals corresponding to the regions.

6. The gaming machine according to claim 1 , wherein,

a plurality of upper displays which are provided in a parallel manner independently from the gaming terminals so as to form a single common effect display screen on which a plurality of individual images corresponding to the respective terminals are displayed is further included, and

the center controller further executes steps of:

(c1) in the common game randomly selected in step (b2), displaying a fishing bait image on the common effect display screen; and

(c2) enlarging the displayed fishing bait image when, among the bonus types, a bonus type corresponding to a unit payout amount not lower than a predetermined amount is won.

7. The gaming machine according to claim 1 , further comprising:

a plurality of upper displays which are provided in a parallel manner independently from the gaming terminals so as to form a single common effect display screen on which a plurality of individual images corresponding to the respective terminals are displayed,

wherein the bonus type storage device stores the bonus types in association with fish images and ranks corresponding to the unit payout amounts, and

wherein the center controller further executes a step of:

(d1) in the common game randomly selected in step (b2), displaying the fish image associated with the bonus type that a gaming terminal wins on the common effect display screen, with a size corresponding to the rank of the bonus type.