Gaming system and method providing adjustable odds for triggering a group bonus event

1. A gaming system comprising:

at least one controller configured to communicate with each of a plurality of gaming devices, wherein at least one of the gaming devices comprises an acceptor, wherein when executed by a processor of said gaming device, a plurality of instructions of said gaming device cause the processor of said gaming device to, responsive to a physical item being received via the acceptor, establish a credit balance based, at least in part, on a monetary value associated with the received physical item, and responsive to a cashout input being received, cause an initiation of any payout associated with the credit balance, and wherein upon a communication of a wager event at a first one of said gaming devices, the at least one controller is programmed to:

determine a quantity of said gaming devices which have communicated a wager event within a predefined period of time;

determine a gaming device probability of triggering a group bonus event, wherein said determination is based on the determined quantity of said gaming devices which have communicated a wager event within the predefined period of time and a target gaming system probability of triggering the group bonus event;

determine if said first one of the gaming devices has caused, based on the determined gaming device probability, the group bonus event to trigger; and

responsive to the first one of the gaming devices being determined to cause the group bonus event to trigger, for each of said determined quantity of said gaming devices which have communicated a wager event within the predefined period of time, cause:

said gaming device to display an indication of said gaming device's participation in said group bonus event;

said gaming device to display a group bonus event award to be provided by said gaming device; and

said gaming device to provide the displayed group bonus event award.

2. The gaming system of claim 1 , wherein the gaming device probability of triggering a group bonus event is inversely proportional to the determined quantity of said gaming devices which have communicated a wager event within the predefined period of time.

3. The gaming system of claim 1 , wherein for a play of a game at the first one of the gaming devices, the at least one controller is programmed to trigger the group bonus event if at least one bonus event triggering symbol is generated in association with the play of the game.

4. The gaming system of claim 3 , wherein for the play of the game at the first one of the gaming devices, the at least one controller is programmed to modify a quantity of the bonus event triggering symbols available to be generated based on the quantity of gaming devices which have communicated a wager event within the predefined period of time.

5. The gaming system of claim 1 , wherein for a play of a game at the first one of the gaming devices, the at least one controller is programmed to trigger the group bonus event if a player at said gaming device is successful in a group bonus event participation sequence.

6. The gaming system of claim 5 , wherein a probability of triggering a group bonus event participation sequence is independent of the quantity of gaming devices which have communicated a wager event within the predefined period of time.

7. The gaming system of claim 1 , wherein the at least one controller is programmed to determine, based on a spin of a wheel associated with the determined gaming device probability, if said first one of the gaming devices has caused the group bonus event to trigger.

8. A method of operating a gaming system, said method comprising:

causing at least one controller to communicate with each of a plurality of gaming devices, and upon a communication of a wager event at a first one of said gaming devices, to:

determine a quantity of said gaming devices which have communicated a wager event within a predefined period of time;

determine a gaming device probability of triggering a group bonus event, wherein said determination is based on the determined quantity of said gaming devices which have communicated a wager event within the predefined period of time and a target gaming system probability of triggering the group bonus event;

determine if said first one of the gaming devices has caused, based on the determined gaming device probability, the group bonus event to trigger; and

if responsive to the first one of the gaming devices being determined to cause the group bonus event to trigger, for each of said determined quantity of said gaming devices which have communicated a wager event within the predefined period of time, cause:

said gaming device to display an indication of said gaming device's participation in said group bonus event;

said gaming device to display a group bonus event award to be provided by said gaming device; and

said gaming device to provide the displayed group bonus event award, wherein a credit balance of said gaming device is increasable based on the displayed group bonus event award, said credit balance being increasable via an acceptor of a physical item associated with a monetary value, and said credit balance being decreasable responsive to a cashout input.

9. The method of operating the gaming system of claim 8 , wherein the gaming device probability of triggering a group bonus event is inversely proportional to the determined quantity of said gaming devices which have communicated a wager event within the predefined period of time.

10. The method of operating the gaming system of claim 8 , wherein the method includes for a play of a game at the first one of the gaming devices, causing the at least one controller to trigger the group bonus event if at least one bonus event triggering symbol is generated in association with the play of the game.

11. The method of operating the gaming system of claim 10 , wherein the method includes for the play of the game at the first one of the gaming devices, causing the at least one controller to modify a quantity of the bonus event triggering symbols available to be generated based on the quantity of gaming devices which have communicated a wager event within the predefined period of time.

12. The method of operating the gaming system of claim 8 , wherein the method includes for a play of a game at the first one of the gaming devices, causing the at least one controller to trigger the group bonus event if a player at said gaming device is successful in a group bonus event participation sequence.

13. The method of operating the gaming system of claim 12 , wherein a probability of triggering a group bonus event participation sequence is independent of the quantity of gaming devices which have communicated a wager event within the predefined period of time.

14. The method of operating the gaming system of claim 8 , wherein the method is provided through an internet.

15. A non-transitory computer readable medium including a plurality of instructions, which when executed by at least one controller, cause the at least one controller to operate with a plurality of gaming devices, upon a communication of a wager event at a first one of said gaming devices, to:

determine a quantity of said gaming devices which have communicated a wager event within a predefined period of time;

determine a gaming device probability of triggering a group bonus event, wherein said determination is based on the determined quantity of said gaming devices which have communicated a wager event within the predefined period of time and a target gaming system probability of triggering the group bonus event;

determine if said first one of the gaming devices has caused, based on the determined gaming device probability, the group bonus event to trigger; and

responsive to the first one of the gaming devices is determined to cause the group bonus event to trigger, for each of said determined quantity of said gaming devices which have communicated a wager event within the predefined period of time, cause:

said gaming device to display an indication of said gaming device's participation in said group bonus event;

said gaming device to display a group bonus event award to be provided by said gaming device; and

said gaming device to provide the displayed group bonus event award, wherein a credit balance of said gaming device is increasable based on the displayed group bonus event award, said credit balance being increasable via an acceptor of a physical item associated with a monetary value, and said credit balance being decreasable responsive to a cashout input.

16. The non-transitory computer readable medium of claim 15 , wherein the gaming device probability of triggering a group bonus event is inversely proportional to the determined quantity of said gaming devices which have communicated a wager event within the predefined period of time.

17. The non-transitory computer readable medium of claim 15 , wherein when executed by the at least one controller, the plurality of instructions cause the at least one controller to operate with a plurality of gaming devices, for a play of a game at the first one of the gaming devices, to trigger the group bonus event if at least one bonus event triggering symbol is generated in association with the play of the game.

18. The non-transitory computer readable medium of claim 17 , wherein when executed by the at least one controller, the plurality of instructions cause the at least one controller to operate with a plurality of gaming devices, to modify a quantity of the bonus event triggering symbols available to be generated based on the quantity of gaming devices which have communicated a wager event within the predefined period of time.

19. The non-transitory computer readable medium of claim 15 , wherein when executed by the at least one controller, the plurality of instructions cause the at least one controller to operate with a plurality of gaming devices, for a play of a game at the first one of the gaming devices, to trigger the group bonus event if a player at said gaming device is successful in a group bonus event participation sequence.

20. The non-transitory computer readable medium of claim 19 , wherein a probability of triggering a group bonus event participation sequence is independent of the quantity of gaming devices which have communicated a wager event within the predefined period of time.

21. A gaming system comprising:

at least one controller configured to communicate with each of a plurality of gaming devices, wherein at least one of the gaming devices comprises an acceptor, wherein when executed by a processor of said gaming device, a plurality of instructions of said gaming device cause the processor of said gaming device to, responsive to a physical item being received via the acceptor, establish a credit balance based, at least in part, on a monetary value associated with the received physical item, and responsive to a cashout input being received, cause an initiation of any payout associated with the credit balance, and wherein a determination that a triggering symbol combination is displayed in association with a play of a base game played by a first player at a first one of said gaming devices, the at least one controller is programmed to:

determine a quantity of said gaming devices being played by a quantity of players,

determine a group bonus game trigger probability, said group bonus game trigger probability being based on the determined quantity of said gaming devices being played and a predetermined probability, wherein a first quantity of said gaming devices being played is associated with a first group bonus game trigger probability and a second, different quantity of said gaming devices being played is associated with a second, different group bonus game trigger probability,

cause a display, in association with a sub-bonus game played by the first player, of whether to trigger a group bonus game, said determination of whether to trigger the group bonus game being based on the determined group bonus game trigger probability, and

responsive to the determination being to trigger the group bonus game:

trigger a play of the group bonus game, and

cause each of the quantity of players of the determined quantity of said gaming devices to participate in the triggered play of the group bonus game.