Free game prizing method and apparatus for an electronic gaming terminal

• US 6,443,452 B1
• Filed: 02/14/2000
• Issued: 09/03/2002
• Est. Priority Date: 09/13/1999
• Status: Expired due to Term

• Current Assignee: International Game Technology
• Original Assignee: International Game Technology
• Inventors: Brune, Chris T.
• Primary Examiner(s): LAYNO, BENJAMIN
• Application Number:
  US09/503,562
• Time in Patent Office: 932 Days
• Field of Search: 273/143.R, 273/138.2, 463/20, 463/25-29
• US Class Current: 273/143.00R
• CPC Class Codes: G07F 17/32 for games, toys, sports, or amusements
• CPC Class Codes: G07F 17/3267 Game outcomes which determine the course of the subsequent game, e.g. double or quits, free games, higher payouts, different new games

Abstract

A gaming terminal provides at least a portion of at least one prize in the form of at least one or more free game rounds. A benefit may be calculated as the difference between the value of the prize if paid out in coins or other monetary value and the value paid out as free game rounds. In one aspect, the benefit is redistributed in the paytable, preferably so as to provide a game in which the overall, long-term averaged payback amount is unchanged by the process of converting monetary payouts to free game payouts and redistributing the benefit thereof.

Claims

1. A method for modifying a gaming paytable of a game wherein at least one game round play is required to be played, and one or more free game round plays are provided upon a winning outcome comprising:

substituting one or more free game round plays for at least part of at least one monetary payout, wherein a first benefit is created reflecting the lesser value of a free game round play compared to the value of a payout in an amount required as a wager from a player in order to obtain a game round play; and

distributing at least part of said benefit in said paytable as an increase in the value or win frequency of another prize of said paytable.

2. A method, as claimed in claim 1, wherein said increase in the value or win frequency of another prize includes increasing at least a first payout amount.

3. A method, as claimed in claim 1, wherein said increase in the value or win frequency of another prize includes increasing frequency of at least a first prize.

4. A method, as claimed in claim 1, wherein said paytable includes a provision for multiplying at least a first free game round play in response to a first game output.

5. A method for modifying a paytable for a game, said game being a game of a type known to the art, wherein at least one game round play is required to be played, and one or more free game round plays a winning outcome comprising:

identifying, in said paytable for said game, at least one gaming outcome traditionally associated with a specific payout; and

substituting, for said specific payout, a specific number of free game round plays, said specific number being at least one.

6. A method, as claimed in claim 5, wherein said specific number is equal to the number of plays that, in the traditional game, can be obtained from a wager equal to said specific payout.

7. Gaming apparatus in which at least one game round play is required to be played, and one or more free game round plays are provided upon a winning outcome comprising:

a gaming terminal including a microprocessor, said microprocessor operating to execute a stored program, wherein said stored program controls the microprocessor to output one or more free plays as a prize in response to at least a first gaming output traditionally associated with a monetary payout, wherein a first benefit is created equal to the lesser value of a free play compared to the value of a monetary payout in an amount equal to a wager necessary to obtain said free play; and

wherein at least a portion of said benefit is distributed in said paytable by increasing an amount or a frequency of at least a second prize in said paytable.

8. An apparatus, as claimed in claim 7, wherein said redistribution is configured to provide an overall gaming terminal payback percentage substantially equal to the payback percentage of the gaming terminal having said monetary payout in place of said free play.

9. An apparatus, as claimed in claim 7, wherein said redistribution comprises an increase of at least a first payout amount.

10. An apparatus, as claimed in claim 7, wherein said redistribution includes an increase in a frequency of at least a first prize.

11. An apparatus as claimed in claim 7, wherein said paytable provides multiplying a prize in response to at least a first game outcome.

12. A gaming apparatus in which at least one game round play is required to be played, and one or more free game round plays are provided upon a winning outcome comprising:

at least a first processor for outputting prizes in accordance with a stored paytable;

means for receiving at least a first wager from a player; and

wherein said paytable defines at least a first free game round prize and at least a second prize other than one or more free game rounds, said second prize having a magnitude or frequency, defined by said paytable, greater than a magnitude or frequency of a corresponding prize in a corresponding paytable without said free game round prize.

13. A method for modifying a gaming paytable of a game wherein at least one game round play is required to be played, and one or more free game round plays are provided upon a winning outcome which comprises:

substituting, for a specific cash prize of the unmodified paytable, one or more free plays of the game associated with the paytable as a non-cash prize, said cash prize having a specific value; and

adding at least a portion of said specific value to another prize of the paytable.

14. The method of claim 13 in which the overall payback to the player of a machine using said paytable remains essentially unchanged.

15. The method of claim 13 in which the number of free games awarded as said non-cash prize essentially equals the specific value divided by the normal unit charge to a player of playing the game associated with the paytable.

16. A method for modifying a gaming paytable of a game wherein at least one game round play is required to be played, and one or more free game round plays are provided upon a winning outcome which comprises:

substituting, for a specific cash prize of the unmodified paytable, one or more free plays of the game associated with the paytable as a non-cash prize, said cash prize having a specific value; and

increasing the odds of winning another prize of the paytable.

17. The method of claim 16 in which the overall payback to the player of a machine using said paytable remains essentially unchanged.

18. The method of claim 16 in which the number of free games awarded as said non-cash prize essentially equals the specific value divided by the normal unit charge to a player for playing the game associated with the paytable.