CA2331243A1 - Gaming machine with high volatility index - Google Patents
Gaming machine with high volatility index Download PDFInfo
- Publication number
- CA2331243A1 CA2331243A1 CA002331243A CA2331243A CA2331243A1 CA 2331243 A1 CA2331243 A1 CA 2331243A1 CA 002331243 A CA002331243 A CA 002331243A CA 2331243 A CA2331243 A CA 2331243A CA 2331243 A1 CA2331243 A1 CA 2331243A1
- Authority
- CA
- Canada
- Prior art keywords
- gaming machine
- reels
- game
- payoffs
- payoff
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/32—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for games, toys, sports, or amusements
- G07F17/3244—Payment aspects of a gaming system, e.g. payment schemes, setting payout ratio, bonus or consolation prizes
Abstract
A gaming machine comprises a spinning reel display showing a plurality of symbols on each of a plurality of rotatable reels. The reels are rotated and stopped to place the symbols of each reel in visual association with a pay line. A winning combination of displayed symbols triggers a payoff. The distribution of payoff values and probabilities results in a high volatility index, so that the distribution is similar to a state-run lottery.
Description
GAMING MACHINE WITH HIGH VOLATILITY INDEX
FIELD OF THE INVENTION
The present invention relates generally to gaming machines and, more particularly, to a gaming machine with a high volatility index, i.e., most of the payoffs provided by the machine are high, and these high payoffs have a fairly high probability of occurring.
BACKGROUND OF THE INVENTION
Gaming machines such as slot machines determine the value of a player's payoff by the orientation of symbols on a dispilay. In a typical slot machine, there are numerous payoff values each with a predetermined probability of payoff based on a variety of possible symbol orientations. The attractiveness of a slot machine to a player is based on many factors, including appearance, entertainment value, and the values and perceived chances of winning payoffs. Attempting to attract players, most slot machines currently in use employ numerous payoff levels spread fairly evenly along a spectrum from the lowest possible payoff (often simply a return of the player's bet) to the highest payoff. Slot machines have proven immensely popular with players, and casino operators typically install dozens to hundreds of the machines in a single casino.
The industry standard for measuring distribution of sizes and probabilities of slot machine payoffs is a mathematical value called the volatility index. Current slot machines all have low volatility indices, which means that there is a relatively steady progression of many payoff values from the lowest to the highest, with each payoff s corresponding probability decreasing as the value of the payoff' increases.
CHICAG027790v1 -State-run lotteries, like slot machines, are seeing great popularity.
Lotteries are based on the chances of a player's chosen series of numbers matching a randomly selected series. In a lottery, there may be several smaller payoff levels based on combinations of a few numbers, but the largest payoff is reserved for the very small number of players who match all numbers. Expressed in terms used t:o describe slot machines, lotteries therefore have a high volatility index, though lotteries' volatility indices will not necessarily be as high as the volatility indices of the present invention because large payoffs have an extremely small chance of occurring. The popularity of a lottery is directly linked to the size of the maximum payoff, so that a high maximum payoff will result in more lottery tickets being sold, even though the chances of winning remain extremely small. Players' appreciation of lotteries stems from the fact that incredible wealth can be achieved with a single play.
Because both slot machines and lotteries are extremely popular, a slot machine employing the general payoff characteristics of a lottery would make use of each game's individual popularity to appeal to both players and casino operators. Further, the odds of winning large payoffs on a slot machine need not be so remote as in a lottery, and greater odds of winning will result in more visible large wins in a casino, increasing player interest in the slot machine. Thus, there is a need to develop a slot machine that retains the easy playability and attractive design of a slot machine, and combines this with the high volatility index seen in lotteries. The present invention is directed to satisfying this need.
CHICAGO 27790v1 -SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a payoff distribution for a slot machine with game outcomes characterized by a high volatility index.
The slot machine includes a spinning reel display showing a plurality of symbols on each of a plurality of rotatable reels. The reels are rotated and stopped to place the symbols of each reel in visual association with a pay line. The pay line is associated with at least one of the stops on each of the reels. In one embodiment, the reels are rotatable about a single vertical axis so that the pay line is oriented in a vertical direction. In this embodiment, each reel is capable of displaying only one payoff symbol, though this symbol may appear several times on each reel.
The machine of this embodiment only has one possible high payoff of, for example, one million U.S. dollars. The payoff of this embodiment is granted when each reel displays one of its payoff symbols so that the symbols align vertically with the pay line.
BRIEF DESC.'RIPTION OF THE DRAWINGS
The foregoing and other advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings in which:
FIG. 1 is a perspective view of a gaming machine embodying the invention;
FIG. 2 is a block diagram of a control system suitable for controlling the gaming machine in FIG. 1;
FIGS. 3a and 3b are diagrams of reel strips used in two embodiments of the present invention; and FIGS. 4a, 4b, 4c, 4d, and 4e are math tables identifying payoff amounts and probabilities that may occur in five embodiments of the invention.
CHICAG027790v1 -J
While the invention is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will be described in detail herein. However, it should be understood that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF THE INVENTION
Though gaming machines have seen great popularity in casinos, up to this point they have all utilized fairly limited ranges of payoffs and probabilities. Current gaming machines have long lists of payoffs, with the probabilities gradually getting smaller for higher payoffs in the distribution. For example, a typical casino gaming machine might have ten payoff levels ranging from a few U.S. dollars to several thousand U.S. dollars, with a roughly linear progression for the intermediate values. This distribution is different from the payoff and probability distributions seen in popular state-run lotteries, where the values of the largest payoffs are much greater than smaller payoffs, with corresponding much smaller odds of winning the largest payoffs. If casino players are given the option to play gaming machines having payoff distributions similar to state-run lotteries, it is believed that such gaming machines, along with the casinos that feature them, will see great success given the combined popularity of gaming machines and state-run lotteries. While most gaming machines currently in use feature relatively low volatility indices of from 5 to 100, a gaming machine having a volatility index greater than or equal to about 150 will maintain the excitement of high payoffs being attainable within a reasonable number of spins.
CHICAGO 27790v1 -The present invention is directed to producing a gaming machine that will make use of this combined interest in lotteries and standard casino gaming machines. FIG.
1 shows a slot machine 10 on which the present invention may be implemented. The slot machine includes a display area 12 through which a player may observe five mechanical reels 14, 16, 18, 20, and 22. It will be appreciated that the game may alternatively be implemented entirely on a video display that shows video images of reels, and it may also be implemented on a display that includes more or fewer reels.
FIG. 2 is a block diagram of a controller system suitable for operating the slot machine 10 of FIG. 1. A coin/credit detector 34 signals a processor 36 when a player has inserted a number of coins into a coffin slot 30 (see FIG. I), inserted bills into a bill acceptor 28 (see FIG. 1) or played a number of credits by using the "bet" button 31. After the player has activated a switch 38 (e.g., by pushing a spin button 26), the processor 36 initiates game play by randomly selecting stop positions for the reels 14, 16, 18, 20, and 22 (see FI(i. 1) and setting the reels 14, 16, 18, 20, and 22 in motion. Then, using technology well known in the art, the processor 36 causes a reel motor and step control 40 to successively stop the reels 14, 16, 18, 20, and 22 at the selected stop positions, starting with the bottom reel 22 and progressing to the top reel 14. A rotational position detector 42 provides feedback to the processor 36 to ensure that the reeds 14, 16, 18, 20, and 22 are stopped at the correct stop positions. The symbols displayed on the reels at the stop positions define the game outcome.
A system memory 44 stores control software, operational instructions, and data associated with the slot machine 10. In one embodiment, the system memory 44 comprises a separate read-only memory (ROM) and battery-backed random-access memory (RAM).
However, it will be appreciated that the system memory 44 may be implemented on any of CHICAGO 27790v1 -several alternative types of memory structures or may be implemented on a single memory structure. A payoff mechanism 46 :is operable in response to instructions from the processor to grant a payoff of coins or credil;s to the player in response to the winning combination stored in memory 44. This embodiment is programmed to contain only one winning combination, but other embodiments of this gaming machine having several possible winning combinations are contemplated.
As best observed in FIG. l, the symbols on the reels 14, 16, 18, 20, and 22 are displayed in a symbol group consisting of five symbols, with each displayed symbol aligned with a vertical pay line 32. Under this embodiment, at most one non-blank symbol per reel is visible when the reels 14, 16, 18, 20, and 22 are stopped, but it will be appreciated that alternative embodiments could be created wherein several non-blank symbols on each reel would be visible at once. The symbol group is determined to include the winning combination (e.g., the symbol comt~ination resulting in a payment of coins or credits) if it includes the combination of symbols which corresponds to the predefined, winning combination. The predefined winning combination and its associated payoff amount for the game are stored in the system memory 44 and may also be shown on a pay table printed on the slot machine cabinet.
Under this embodiment, the symbols on the reels 14, 16, 18, 20, and 22 comprise blank spaces and portions of a fictional $1 million U.S. dollar bill. Only one winning combination exists, and it is displayed graphically when all portions of the $1 million U.S.
dollar bill align along the single pay line 32. Other embodiments could be developed using the present invention. For example., a gaming device similar to the first embodiment could have several payoffs instead of only one, with the distribution of,probabilities and payoffs still CHICAG027790v1 -having a high volatility index. As another example, the gaming machine could play keno, bingo, or roulette instead of slots. Another possible embodiment of the present invention is a gaming machine accepting several different wager amounts, with different volatility indices for each wager amount. All embe~diments of the invention are such that the distribution of S payoff probabilities and values as stored in system memory 44 exhibits a high volatility index, VI, for at least one wager amount.
The volatility index for a machine accepting multiple wager amounts is defined as:
WAGER N pClyscaled k _ _EVw CLP ~ ~.Pwin k Bet,scaledw 100 vl-_ WAGER
where:
CLF is a confidence level factor, described below (for example, CLF = 2.58 for a confidence interval of 99-100% and CLF= 1.65 for a confidence interval of 90-100%);
w progresses from one to the: number of the maximum wager (i.e., if five different wagers are possible, w progresses from 1 to 5);
k progresses from one to the number of payoffs;
N is the number of different payoffs;
P~,,;n k is the probability of a specified payoff occurring;
Pays~aredk is a scaled payoff (i.e., the payoff divided by the amount of money wagered) corresponding to each payoff;
CHICAGO 27790v1 -BetSCaled w is a scaled wager amount where magnitudes of wagers have been uniformly re-scaled so that the largest is 1 (hen.ce, bets of 1,5 and 100 can give scaled wager amounts of 1/100,1/20 and 1);
EVW is the expected value of the return percentage, defined to be the percentage of the total wager that the machine will pay out over the cycle of the game, where the cycle is defined to be the set of all possible outcomes; and WAGER is the maximum number of possible wagers, where different wagers alter the ratios of payoffs to bets or the probabilities associated with one or more payoffs.
In the present invention, at least one wager results in a high volatility index. For an embodiment having only one possiblle wager and several possible payoffs, the volatility index equation is simplified to:
EV, z VI = CLF ~ P in k Cpayscaledk 100 J, where CLF is the confidence interval factor, described below;
k progresses from one to the number of payoffs;
N is the number of different payoffs;
PW,n k is the probability of a win with one play;
F'ays~a~ed x is a scaled payoff (i. e., the payoff divided by the amount of money wagered) corresponding to each payoff; and EV is the expected value of the return percentage, defined to be the percentage of the total wager that the machine will pay out over the cycle of the game, where the cycle is defined to be the set of all possible outcomes.
CHICAG027790v1 -This simplified equation can be used to calculate the volatility index experienced by a player for a certain wager, even on a machine having multiple wagers. The expected value, scaled payoff, probability of winning, and number of different payoffs may change with each specific wager, and these values can be input into the simplified equation to give a volatility 5 index experienced by a player for a specific wager. The present invention may be implemented on a game having multiple possible wagers, even when only one wager results in a high volatility index.
The confidence level is a statistical term used in the gaming industry to denote the probability that the average game outcome will occur within a predefined range, called the 10 confidence interval, of the expected outcome for a given number of total plays. Hence, for a fixed volatility index and a given number of total plays, choosing a smaller confidence interval (e.g., 99-100% rather than ~)0-100%) gives a smaller confidence level. For a fixed confidence interval and a given number of total plays, a game with a higher volatility index will have a lower confidence level, wince the volatility index is basically a measure of the variability of return on a given number of coins. For a game with a high volatility index to achieve the same confidence level fir a given confidence interval as a game with a lower volatility index, one needs additional plays.
FIGS. 3a and 3b depict reel strips to be used in two embodiments of the present invention. A reel strip is a strip containing the symbols for a mechanical slot machine, and the strips are wrapped around t:he reels that display the game outcome. FIG.
3a, corresponding to a first embodiment of the invention, shows a set of five reel strips 48, 50, 52, 54, and 56, with each strip having 22 possible stopping positions that could be displayed in the display area 12. To achieve the desired win probability for this embodiment, one reel CHICAGO 27790v1 -strip 48 contains seven payoff symbols that are included in the winning combination, a second reel strip SO contains two payoff symbols that are included in the winning combination, and. each of the third, fourth, and fifth reel strips 52, 54, and 56 contains one payoff symbol included in the winning combination.
FIG. 3b, corresponding to a second embodiment of the invention, shows a set of five reel strips 58, 60, 62, 64, and 66, with each strip having 18 possible stopping positions that could be displayed in the display area 12. Reel strip 58 contains five payoff symbols that are included in the winning combination, and each of reel strips 60, 62, 64, and 66 contains one payoff symbol that is included in thc: winning combination.
FIG. 4a shows a math table; corresponding to the first embodiment having only one possible payoff and five reel strips with 22 positions on each strip. The "Wager Amount"
column indicates the amount of money that the player bets with each play. The "Payoff column identifies the pay value of the sole winning outcome. The "Probability"
column indicates the probability of hitting the respective winning combination in a single spin. This number is the same as the "hit frequency" in the volatility index equations.
The "Plays/Hit"
column identifies, on average, the number of plays that would be required to "hit" the game's winning symbol combination. This value is the inverse of the probability. Far example, in a game having the reel strips shown in FIG. 3a, the probability of hitting the winning combination in a single pull is 0.00000272. The plays/hit value is thus 1/0.00000272, or approximately 367,423. In this first embodiment, it would take approximately 367,423 plays, on average, to hit the winning combination.
The "Expected Value of $3 Play" column of FIG. 4a identifies the expected value of each play of the first embodiment, which is computed by finding the product of the "Payoff CHICAG027790v1 -value and the "Probability" value. 'Thus, for the first embodiment with reel strips as shown in FIG. 3a having a payoff of $1,000,000, a wager amount of $3, and a probability of 0.00000272, the "expected value" of each $3 play is computed as: $1,000,000 X
0.00000272 _ $2.72. The "Volatility Index" column gives the volatility index for this embodiment with a confidence interval of 99-100%.
The volatility index for the machine of this embodiment is calculated according to the simplified equation, above. The probability of a win, PW;", is 2.71653E-06.
The scaled payoff, PCIyscaled~ is $1,000,000 divided by the wager amount, $3, or 333,333.33. The expected value percentage, EY, is thus the scaled payoff multiplied by the probability of a win, or 333,333.33 x 2.71653E-06 == 0.9055, or 90.55% of the money wagered.
Hence, using the volatility index equation given above for games having one wager amount, the volatility index for the embodiment shown in FIG. 4a, VI, is calculated as:
YI = 2.58~0.()0000271653~333,333.33 -.9055~Z ~ 1417.
FIG. 4b shows a math table corresponding to a second embodiment having only one possible payoff and five reel strips 'with 18 positions on each strip. Each column in FIG. 4b contains the same information depicted in the corresponding column in FIG. 4a, with the values being slightly modified because this embodiment has a different reel strip configuration. In a game having the reel strips shown in FIG. 3b, the probability of hitting the winning combination in a singles pull is 0.00000265. The plays/hit value is thus 1/0.00000265, or approximately 377,358. In this second embodiment, it would take approximately 377,358 plays, on average, to hit the winning combination.
Further, for the second embodiment with reel strips as shown in FIG. 3b having a pay value of $1,000,000, a wager amount of $3, and a probability of 0.00000265, the expected value of each $3 play is CHICAG027790v1 -computed: $1,000,000 X 0.00000 65 = $2.65. The volatility index is given for a confidence interval of 99-100%.
FIG. 4c is a math table for a third embodiment having multiple payoff possibilities with a single wager. Each column contains the information explained above for each payoff.
The two expected values are added to arrive at the "Total Expected Value" as shown in the bottom row.
FIG. 4d is a math table for a fourth embodiment having multiple payoff possibilities with a single wager. The mathematical basis for this table is described above.
FIG. 4e is a math table for a fifth embodiment of the present invention, having multiple payoffs with a maximum payoff of $1 million and a volatility index of approximately 884.
While the present invention has been described with reference to one or more preferred embodiments, those skilled in the art will recognize that many changes may be made thereto without departing from the spirit and scope of the present invention which is set forth in the following claims.
CHICAGO 27790v l -
FIELD OF THE INVENTION
The present invention relates generally to gaming machines and, more particularly, to a gaming machine with a high volatility index, i.e., most of the payoffs provided by the machine are high, and these high payoffs have a fairly high probability of occurring.
BACKGROUND OF THE INVENTION
Gaming machines such as slot machines determine the value of a player's payoff by the orientation of symbols on a dispilay. In a typical slot machine, there are numerous payoff values each with a predetermined probability of payoff based on a variety of possible symbol orientations. The attractiveness of a slot machine to a player is based on many factors, including appearance, entertainment value, and the values and perceived chances of winning payoffs. Attempting to attract players, most slot machines currently in use employ numerous payoff levels spread fairly evenly along a spectrum from the lowest possible payoff (often simply a return of the player's bet) to the highest payoff. Slot machines have proven immensely popular with players, and casino operators typically install dozens to hundreds of the machines in a single casino.
The industry standard for measuring distribution of sizes and probabilities of slot machine payoffs is a mathematical value called the volatility index. Current slot machines all have low volatility indices, which means that there is a relatively steady progression of many payoff values from the lowest to the highest, with each payoff s corresponding probability decreasing as the value of the payoff' increases.
CHICAG027790v1 -State-run lotteries, like slot machines, are seeing great popularity.
Lotteries are based on the chances of a player's chosen series of numbers matching a randomly selected series. In a lottery, there may be several smaller payoff levels based on combinations of a few numbers, but the largest payoff is reserved for the very small number of players who match all numbers. Expressed in terms used t:o describe slot machines, lotteries therefore have a high volatility index, though lotteries' volatility indices will not necessarily be as high as the volatility indices of the present invention because large payoffs have an extremely small chance of occurring. The popularity of a lottery is directly linked to the size of the maximum payoff, so that a high maximum payoff will result in more lottery tickets being sold, even though the chances of winning remain extremely small. Players' appreciation of lotteries stems from the fact that incredible wealth can be achieved with a single play.
Because both slot machines and lotteries are extremely popular, a slot machine employing the general payoff characteristics of a lottery would make use of each game's individual popularity to appeal to both players and casino operators. Further, the odds of winning large payoffs on a slot machine need not be so remote as in a lottery, and greater odds of winning will result in more visible large wins in a casino, increasing player interest in the slot machine. Thus, there is a need to develop a slot machine that retains the easy playability and attractive design of a slot machine, and combines this with the high volatility index seen in lotteries. The present invention is directed to satisfying this need.
CHICAGO 27790v1 -SUMMARY OF THE INVENTION
In accordance with one aspect of the present invention, there is provided a payoff distribution for a slot machine with game outcomes characterized by a high volatility index.
The slot machine includes a spinning reel display showing a plurality of symbols on each of a plurality of rotatable reels. The reels are rotated and stopped to place the symbols of each reel in visual association with a pay line. The pay line is associated with at least one of the stops on each of the reels. In one embodiment, the reels are rotatable about a single vertical axis so that the pay line is oriented in a vertical direction. In this embodiment, each reel is capable of displaying only one payoff symbol, though this symbol may appear several times on each reel.
The machine of this embodiment only has one possible high payoff of, for example, one million U.S. dollars. The payoff of this embodiment is granted when each reel displays one of its payoff symbols so that the symbols align vertically with the pay line.
BRIEF DESC.'RIPTION OF THE DRAWINGS
The foregoing and other advantages of the invention will become apparent upon reading the following detailed description and upon reference to the drawings in which:
FIG. 1 is a perspective view of a gaming machine embodying the invention;
FIG. 2 is a block diagram of a control system suitable for controlling the gaming machine in FIG. 1;
FIGS. 3a and 3b are diagrams of reel strips used in two embodiments of the present invention; and FIGS. 4a, 4b, 4c, 4d, and 4e are math tables identifying payoff amounts and probabilities that may occur in five embodiments of the invention.
CHICAG027790v1 -J
While the invention is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and will be described in detail herein. However, it should be understood that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
DETAILED DESCRIPTION OF THE INVENTION
Though gaming machines have seen great popularity in casinos, up to this point they have all utilized fairly limited ranges of payoffs and probabilities. Current gaming machines have long lists of payoffs, with the probabilities gradually getting smaller for higher payoffs in the distribution. For example, a typical casino gaming machine might have ten payoff levels ranging from a few U.S. dollars to several thousand U.S. dollars, with a roughly linear progression for the intermediate values. This distribution is different from the payoff and probability distributions seen in popular state-run lotteries, where the values of the largest payoffs are much greater than smaller payoffs, with corresponding much smaller odds of winning the largest payoffs. If casino players are given the option to play gaming machines having payoff distributions similar to state-run lotteries, it is believed that such gaming machines, along with the casinos that feature them, will see great success given the combined popularity of gaming machines and state-run lotteries. While most gaming machines currently in use feature relatively low volatility indices of from 5 to 100, a gaming machine having a volatility index greater than or equal to about 150 will maintain the excitement of high payoffs being attainable within a reasonable number of spins.
CHICAGO 27790v1 -The present invention is directed to producing a gaming machine that will make use of this combined interest in lotteries and standard casino gaming machines. FIG.
1 shows a slot machine 10 on which the present invention may be implemented. The slot machine includes a display area 12 through which a player may observe five mechanical reels 14, 16, 18, 20, and 22. It will be appreciated that the game may alternatively be implemented entirely on a video display that shows video images of reels, and it may also be implemented on a display that includes more or fewer reels.
FIG. 2 is a block diagram of a controller system suitable for operating the slot machine 10 of FIG. 1. A coin/credit detector 34 signals a processor 36 when a player has inserted a number of coins into a coffin slot 30 (see FIG. I), inserted bills into a bill acceptor 28 (see FIG. 1) or played a number of credits by using the "bet" button 31. After the player has activated a switch 38 (e.g., by pushing a spin button 26), the processor 36 initiates game play by randomly selecting stop positions for the reels 14, 16, 18, 20, and 22 (see FI(i. 1) and setting the reels 14, 16, 18, 20, and 22 in motion. Then, using technology well known in the art, the processor 36 causes a reel motor and step control 40 to successively stop the reels 14, 16, 18, 20, and 22 at the selected stop positions, starting with the bottom reel 22 and progressing to the top reel 14. A rotational position detector 42 provides feedback to the processor 36 to ensure that the reeds 14, 16, 18, 20, and 22 are stopped at the correct stop positions. The symbols displayed on the reels at the stop positions define the game outcome.
A system memory 44 stores control software, operational instructions, and data associated with the slot machine 10. In one embodiment, the system memory 44 comprises a separate read-only memory (ROM) and battery-backed random-access memory (RAM).
However, it will be appreciated that the system memory 44 may be implemented on any of CHICAGO 27790v1 -several alternative types of memory structures or may be implemented on a single memory structure. A payoff mechanism 46 :is operable in response to instructions from the processor to grant a payoff of coins or credil;s to the player in response to the winning combination stored in memory 44. This embodiment is programmed to contain only one winning combination, but other embodiments of this gaming machine having several possible winning combinations are contemplated.
As best observed in FIG. l, the symbols on the reels 14, 16, 18, 20, and 22 are displayed in a symbol group consisting of five symbols, with each displayed symbol aligned with a vertical pay line 32. Under this embodiment, at most one non-blank symbol per reel is visible when the reels 14, 16, 18, 20, and 22 are stopped, but it will be appreciated that alternative embodiments could be created wherein several non-blank symbols on each reel would be visible at once. The symbol group is determined to include the winning combination (e.g., the symbol comt~ination resulting in a payment of coins or credits) if it includes the combination of symbols which corresponds to the predefined, winning combination. The predefined winning combination and its associated payoff amount for the game are stored in the system memory 44 and may also be shown on a pay table printed on the slot machine cabinet.
Under this embodiment, the symbols on the reels 14, 16, 18, 20, and 22 comprise blank spaces and portions of a fictional $1 million U.S. dollar bill. Only one winning combination exists, and it is displayed graphically when all portions of the $1 million U.S.
dollar bill align along the single pay line 32. Other embodiments could be developed using the present invention. For example., a gaming device similar to the first embodiment could have several payoffs instead of only one, with the distribution of,probabilities and payoffs still CHICAG027790v1 -having a high volatility index. As another example, the gaming machine could play keno, bingo, or roulette instead of slots. Another possible embodiment of the present invention is a gaming machine accepting several different wager amounts, with different volatility indices for each wager amount. All embe~diments of the invention are such that the distribution of S payoff probabilities and values as stored in system memory 44 exhibits a high volatility index, VI, for at least one wager amount.
The volatility index for a machine accepting multiple wager amounts is defined as:
WAGER N pClyscaled k _ _EVw CLP ~ ~.Pwin k Bet,scaledw 100 vl-_ WAGER
where:
CLF is a confidence level factor, described below (for example, CLF = 2.58 for a confidence interval of 99-100% and CLF= 1.65 for a confidence interval of 90-100%);
w progresses from one to the: number of the maximum wager (i.e., if five different wagers are possible, w progresses from 1 to 5);
k progresses from one to the number of payoffs;
N is the number of different payoffs;
P~,,;n k is the probability of a specified payoff occurring;
Pays~aredk is a scaled payoff (i.e., the payoff divided by the amount of money wagered) corresponding to each payoff;
CHICAGO 27790v1 -BetSCaled w is a scaled wager amount where magnitudes of wagers have been uniformly re-scaled so that the largest is 1 (hen.ce, bets of 1,5 and 100 can give scaled wager amounts of 1/100,1/20 and 1);
EVW is the expected value of the return percentage, defined to be the percentage of the total wager that the machine will pay out over the cycle of the game, where the cycle is defined to be the set of all possible outcomes; and WAGER is the maximum number of possible wagers, where different wagers alter the ratios of payoffs to bets or the probabilities associated with one or more payoffs.
In the present invention, at least one wager results in a high volatility index. For an embodiment having only one possiblle wager and several possible payoffs, the volatility index equation is simplified to:
EV, z VI = CLF ~ P in k Cpayscaledk 100 J, where CLF is the confidence interval factor, described below;
k progresses from one to the number of payoffs;
N is the number of different payoffs;
PW,n k is the probability of a win with one play;
F'ays~a~ed x is a scaled payoff (i. e., the payoff divided by the amount of money wagered) corresponding to each payoff; and EV is the expected value of the return percentage, defined to be the percentage of the total wager that the machine will pay out over the cycle of the game, where the cycle is defined to be the set of all possible outcomes.
CHICAG027790v1 -This simplified equation can be used to calculate the volatility index experienced by a player for a certain wager, even on a machine having multiple wagers. The expected value, scaled payoff, probability of winning, and number of different payoffs may change with each specific wager, and these values can be input into the simplified equation to give a volatility 5 index experienced by a player for a specific wager. The present invention may be implemented on a game having multiple possible wagers, even when only one wager results in a high volatility index.
The confidence level is a statistical term used in the gaming industry to denote the probability that the average game outcome will occur within a predefined range, called the 10 confidence interval, of the expected outcome for a given number of total plays. Hence, for a fixed volatility index and a given number of total plays, choosing a smaller confidence interval (e.g., 99-100% rather than ~)0-100%) gives a smaller confidence level. For a fixed confidence interval and a given number of total plays, a game with a higher volatility index will have a lower confidence level, wince the volatility index is basically a measure of the variability of return on a given number of coins. For a game with a high volatility index to achieve the same confidence level fir a given confidence interval as a game with a lower volatility index, one needs additional plays.
FIGS. 3a and 3b depict reel strips to be used in two embodiments of the present invention. A reel strip is a strip containing the symbols for a mechanical slot machine, and the strips are wrapped around t:he reels that display the game outcome. FIG.
3a, corresponding to a first embodiment of the invention, shows a set of five reel strips 48, 50, 52, 54, and 56, with each strip having 22 possible stopping positions that could be displayed in the display area 12. To achieve the desired win probability for this embodiment, one reel CHICAGO 27790v1 -strip 48 contains seven payoff symbols that are included in the winning combination, a second reel strip SO contains two payoff symbols that are included in the winning combination, and. each of the third, fourth, and fifth reel strips 52, 54, and 56 contains one payoff symbol included in the winning combination.
FIG. 3b, corresponding to a second embodiment of the invention, shows a set of five reel strips 58, 60, 62, 64, and 66, with each strip having 18 possible stopping positions that could be displayed in the display area 12. Reel strip 58 contains five payoff symbols that are included in the winning combination, and each of reel strips 60, 62, 64, and 66 contains one payoff symbol that is included in thc: winning combination.
FIG. 4a shows a math table; corresponding to the first embodiment having only one possible payoff and five reel strips with 22 positions on each strip. The "Wager Amount"
column indicates the amount of money that the player bets with each play. The "Payoff column identifies the pay value of the sole winning outcome. The "Probability"
column indicates the probability of hitting the respective winning combination in a single spin. This number is the same as the "hit frequency" in the volatility index equations.
The "Plays/Hit"
column identifies, on average, the number of plays that would be required to "hit" the game's winning symbol combination. This value is the inverse of the probability. Far example, in a game having the reel strips shown in FIG. 3a, the probability of hitting the winning combination in a single pull is 0.00000272. The plays/hit value is thus 1/0.00000272, or approximately 367,423. In this first embodiment, it would take approximately 367,423 plays, on average, to hit the winning combination.
The "Expected Value of $3 Play" column of FIG. 4a identifies the expected value of each play of the first embodiment, which is computed by finding the product of the "Payoff CHICAG027790v1 -value and the "Probability" value. 'Thus, for the first embodiment with reel strips as shown in FIG. 3a having a payoff of $1,000,000, a wager amount of $3, and a probability of 0.00000272, the "expected value" of each $3 play is computed as: $1,000,000 X
0.00000272 _ $2.72. The "Volatility Index" column gives the volatility index for this embodiment with a confidence interval of 99-100%.
The volatility index for the machine of this embodiment is calculated according to the simplified equation, above. The probability of a win, PW;", is 2.71653E-06.
The scaled payoff, PCIyscaled~ is $1,000,000 divided by the wager amount, $3, or 333,333.33. The expected value percentage, EY, is thus the scaled payoff multiplied by the probability of a win, or 333,333.33 x 2.71653E-06 == 0.9055, or 90.55% of the money wagered.
Hence, using the volatility index equation given above for games having one wager amount, the volatility index for the embodiment shown in FIG. 4a, VI, is calculated as:
YI = 2.58~0.()0000271653~333,333.33 -.9055~Z ~ 1417.
FIG. 4b shows a math table corresponding to a second embodiment having only one possible payoff and five reel strips 'with 18 positions on each strip. Each column in FIG. 4b contains the same information depicted in the corresponding column in FIG. 4a, with the values being slightly modified because this embodiment has a different reel strip configuration. In a game having the reel strips shown in FIG. 3b, the probability of hitting the winning combination in a singles pull is 0.00000265. The plays/hit value is thus 1/0.00000265, or approximately 377,358. In this second embodiment, it would take approximately 377,358 plays, on average, to hit the winning combination.
Further, for the second embodiment with reel strips as shown in FIG. 3b having a pay value of $1,000,000, a wager amount of $3, and a probability of 0.00000265, the expected value of each $3 play is CHICAG027790v1 -computed: $1,000,000 X 0.00000 65 = $2.65. The volatility index is given for a confidence interval of 99-100%.
FIG. 4c is a math table for a third embodiment having multiple payoff possibilities with a single wager. Each column contains the information explained above for each payoff.
The two expected values are added to arrive at the "Total Expected Value" as shown in the bottom row.
FIG. 4d is a math table for a fourth embodiment having multiple payoff possibilities with a single wager. The mathematical basis for this table is described above.
FIG. 4e is a math table for a fifth embodiment of the present invention, having multiple payoffs with a maximum payoff of $1 million and a volatility index of approximately 884.
While the present invention has been described with reference to one or more preferred embodiments, those skilled in the art will recognize that many changes may be made thereto without departing from the spirit and scope of the present invention which is set forth in the following claims.
CHICAGO 27790v l -
Claims (24)
1. A gaming machine comprising:
a spinning reel display having a plurality of symbols on each of a plurality of rotatable reels, said reels being rotated and stopped at stop positions to place combinations of said symbols in visible association with a pay line; and a controller randomly determining said stop positions of said reels, the combinations of symbols having respective probabilities of occurring and respective payoffs, a distribution of said probabilities and said payoffs yielding a volatility index greater than or equal to about 150.
a spinning reel display having a plurality of symbols on each of a plurality of rotatable reels, said reels being rotated and stopped at stop positions to place combinations of said symbols in visible association with a pay line; and a controller randomly determining said stop positions of said reels, the combinations of symbols having respective probabilities of occurring and respective payoffs, a distribution of said probabilities and said payoffs yielding a volatility index greater than or equal to about 150.
2. The gaming machine of claim 1 wherein said spinning reel display includes a video screen showing video images of said reels.
3. The gaming machine of claim 1 wherein said reels are mechanical and said spinning reel display includes a window through which said plurality of symbols on each of said mechanical reels is viewed.
4. The gaming machine of claim 3 wherein said reels are rotatable about a vertical axis.
5. The gaming machine of claim 3 wherein said reels are rotatable about a horizontal axis.
6. The gaming machine of claim 1 wherein there is only one possible payoff.
7. The gaming machine of claim 1 wherein said volatility index is greater than or equal to about 1500.
8. The gaming machine of claim 1 wherein said symbols include only blanks and payoff symbols.
9. The gaming machine of claim 1 wherein only one wager amount is allowed.
10. A high volatility index payoff method for a gaming machine, the method comprising:
providing a game of chance selected from a group consisting of slots, bingo,.keno, and roulette, said game having randomly-generated outcomes with respective probabilities of occurring and respective payoffs, a distribution of said probabilities and said payoffs yielding a volatility index greater than or equal to about 150;
playing said game in response to a wager placed by a player;
generating one of said outcomes; and providing the player with one of said payoffs corresponding to said one of said outcomes.
providing a game of chance selected from a group consisting of slots, bingo,.keno, and roulette, said game having randomly-generated outcomes with respective probabilities of occurring and respective payoffs, a distribution of said probabilities and said payoffs yielding a volatility index greater than or equal to about 150;
playing said game in response to a wager placed by a player;
generating one of said outcomes; and providing the player with one of said payoffs corresponding to said one of said outcomes.
11. A gaming machine, comprising a game of chance controlled by a controller in response to a wager, said game of chance being selected from a group consisting of slots, bingo, keno, and roulette said game having; randomly-generated outcomes with respective probabilities of occurring and respective payoffs, a distribution of said probabilities and said payoffs yielding a volatility index greater than or equal to about 150.
12. The gaming machine of claim 10 wherein said game of chance is displayed via a spinning reel display including a video screen showing video images of said reels.
13. The gaming machine. of claim 10 wherein said game of chance is displayed via a spinning reel display including mechanical reels and a window through which a plurality of symbols on each of said mechanical reels are viewed.
14. The gaming machine of claim 13 wherein said reels are rotatable about a vertical axis.
15. The gaming machine of claim 13 wherein said reels are rotatable about a horizontal axis.
16. The gaming machine of claim 13 wherein there is only one possible payoff.
17. The gaming machine of claim 13 wherein said volatility index is greater than or equal to about 1500.
18. A gaming machine, comprising a game of chance controlled by a controller in response to one or more wager amounts, said game of chance being selected from a group consisting of slots, bingo, keno, and roulette, said game having randomly-generated outcomes with respective probabilities of occurring and respective payoffs for each of said wager amounts, a distribution of said probabilities and said payoffs for at least one of said wager amounts yielding a volatility index greater than or equal to about 150.
19. The gaming machine; of claim 18 wherein said game of chance is displayed via a spinning reel display including a video screen showing video images of said reels.
20. The gaming machine of claim 18 wherein said game of chance is displayed via a spinning reel display including mechanical reels and a window through which a plurality of symbols on each of said mechanical reels are viewed.
21. The gaming machine of claim 20 wherein said reels are rotatable about a vertical axis.
22. The gaming machine of claim 20 wherein said reels are rotatable about a horizontal axis.
23. The gaming machine of claim 20 wherein there is only one possible payoff.
24. The gaming machine of claim 20 wherein said volatility index is greater than or equal to about 1500.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/500,857 | 2000-02-09 | ||
| US09/500,857 US6302791B1 (en) | 2000-02-09 | 2000-02-09 | Gaming machine with high volatility index |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2331243A1 true CA2331243A1 (en) | 2001-08-09 |
Family
ID=23991226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002331243A Abandoned CA2331243A1 (en) | 2000-02-09 | 2001-01-17 | Gaming machine with high volatility index |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6302791B1 (en) |
| EP (1) | EP1126426A3 (en) |
| AU (1) | AU770139B2 (en) |
| CA (1) | CA2331243A1 (en) |
| RU (1) | RU2001103774A (en) |
| ZA (1) | ZA200100445B (en) |
Families Citing this family (178)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020065126A1 (en) * | 1994-09-23 | 2002-05-30 | Miller Charles R. | Method, apparatus and system for gaming using a rotatable payout indicator |
| US6592457B1 (en) * | 1999-05-26 | 2003-07-15 | Wms Gaming Inc. | Gaming machine with player selected events |
| US7695363B2 (en) * | 2000-06-23 | 2010-04-13 | Igt | Gaming device having multiple display interfaces |
| US7699699B2 (en) | 2000-06-23 | 2010-04-20 | Igt | Gaming device having multiple selectable display interfaces based on player's wagers |
| US6569013B1 (en) | 2000-07-14 | 2003-05-27 | William Arthur Taylor | Method for playing a video gaming machine |
| US6875108B1 (en) | 2000-10-11 | 2005-04-05 | Igt | Gaming device having multiple selection large award bonus scheme |
| US6802777B2 (en) * | 2001-06-27 | 2004-10-12 | Atlantic City Coin & Slot Service Company, Inc. | Image alignment gaming device and method |
| US6729961B1 (en) | 2000-11-03 | 2004-05-04 | Igt | Method for displaying an interactive game having a pre-determined outcome |
| US6604333B1 (en) * | 2000-11-28 | 2003-08-12 | Tapco International Corporation | Plastic window assembly |
| US6735541B2 (en) * | 2001-02-16 | 2004-05-11 | Exxonmobil Research And Engineering Company | Process unit monitoring program |
| US7371174B2 (en) | 2001-08-20 | 2008-05-13 | Igt | Gaming device having a bonus scheme with alternative ending sequences |
| US7172506B2 (en) * | 2001-08-20 | 2007-02-06 | Igt | Gaming Device having award modification options for player selectable award digits |
| US7377849B2 (en) | 2001-08-20 | 2008-05-27 | Igt | Gaming device having player selectable award digits and award modification options |
| US7547252B2 (en) * | 2001-08-20 | 2009-06-16 | Igt | Gaming device having player-selectable award digits and award modification options |
| US7914373B2 (en) | 2001-08-20 | 2011-03-29 | Igt | Gaming device having a game with a moving digit generated outcome |
| US7329179B2 (en) | 2001-09-21 | 2008-02-12 | Igt | Gaming device having wager dependent bonus game play |
| US6890255B2 (en) | 2001-12-17 | 2005-05-10 | Igt | Multiple wheel roulette game |
| US8216046B2 (en) | 2002-02-01 | 2012-07-10 | Konami Gaming, Inc. | Multi-station game machine |
| JP4387081B2 (en) * | 2002-02-01 | 2009-12-16 | コナミゲーミング インコーポレーテッド | Multi-station game machine |
| AU2003228617A1 (en) | 2002-04-18 | 2003-11-03 | Walker Digital, Llc | Method and apparatus for providing a bonus to a player based on a credit balance |
| US20040023713A1 (en) * | 2002-07-31 | 2004-02-05 | Wolf Bryan D. | Gaming device having a paytable with direct control over distribution of outcomes |
| JP2004065637A (en) * | 2002-08-07 | 2004-03-04 | Dragon:Kk | Symbol display device for game machine |
| US7563163B2 (en) | 2002-10-01 | 2009-07-21 | Igt | Gaming device including outcome pools for providing game outcomes |
| JP2004166820A (en) | 2002-11-18 | 2004-06-17 | Aruze Corp | Game machine |
| US8096867B2 (en) | 2002-11-20 | 2012-01-17 | Universal Entertainment Corporation | Gaming machine and display device with fail-tolerant image displaying |
| JP2004166962A (en) | 2002-11-20 | 2004-06-17 | Aruze Corp | Game machine |
| US7972206B2 (en) | 2002-11-20 | 2011-07-05 | Wms Gaming Inc. | Gaming machine and display device therefor |
| US7329183B2 (en) | 2003-02-21 | 2008-02-12 | Igt | Central determination gaming system where the same seed is used to generate the outcomes for a primary game and a secondary game |
| US6988946B2 (en) | 2003-02-21 | 2006-01-24 | Igt | Central determination gaming system with a central controller providing a game outcome and a gaming terminal determining a presentation of the provided game outcome |
| US6866584B2 (en) | 2003-02-21 | 2005-03-15 | Igt | Apparatus and method for generating a pool of seeds for a central determination gaming system |
| US7291069B2 (en) | 2003-03-06 | 2007-11-06 | Igt | Central determination gaming system with a game outcome generated by a gaming terminal and approved by a central controller |
| US7892094B2 (en) | 2003-05-14 | 2011-02-22 | Universal Entertainment Corporation | Gaming machine with a light guiding plate subjected to a light scattering process and having a light deflection pattern |
| US7192348B2 (en) | 2003-05-20 | 2007-03-20 | Igt | Central determination gaming system which provides a player a choice in outcomes |
| GB0312291D0 (en) * | 2003-05-29 | 2003-07-02 | Waterleaf Ltd | Gaming apparatus |
| GB0313012D0 (en) | 2003-06-06 | 2003-07-09 | Igt Uk Ltd | Entertainment machines |
| GB2403329B (en) | 2003-06-06 | 2006-05-31 | Igt Uk Ltd | Entertainment machines |
| US7399227B2 (en) | 2003-06-23 | 2008-07-15 | Igt | Central determination gaming system with a keno game |
| US7867077B2 (en) * | 2003-09-10 | 2011-01-11 | Igt | Gaming device having bonus game dependent upon variable wager component selection |
| US20050096123A1 (en) * | 2003-09-11 | 2005-05-05 | Cregan Karen M. | Gaming device with secondary selection game in which the number of selections are based on multiple components of the wager in primary game |
| US7666086B2 (en) * | 2003-09-11 | 2010-02-23 | Igt | Gaming device having selection picks and selection outcomes determined based on a wager |
| US8512144B2 (en) | 2003-10-20 | 2013-08-20 | Tipping Point Group, Llc | Method and apparatus for providing secondary gaming machine functionality |
| US8221206B2 (en) | 2004-01-28 | 2012-07-17 | Igt | Gaming device having a partial selectable symbol matrix |
| JP2005230130A (en) * | 2004-02-17 | 2005-09-02 | Aruze Corp | Game machine |
| US7674172B2 (en) | 2004-02-23 | 2010-03-09 | Igt | Gaming device having a wheel-based game |
| US7533885B2 (en) | 2004-02-23 | 2009-05-19 | Igt | Gaming device having a rotor-based game with a bonus opportunity |
| US20060030393A1 (en) * | 2004-03-26 | 2006-02-09 | Atlantic City Coin & Slot Service Company, Inc. | Image alignment gaming device and method |
| AU2005202282A1 (en) * | 2004-05-28 | 2005-12-15 | Universal Entertainment Corporation | Gaming machine |
| JP2005342342A (en) * | 2004-06-04 | 2005-12-15 | Aruze Corp | Game machine |
| US7686685B2 (en) * | 2004-06-21 | 2010-03-30 | Wms Gaming Inc. | Wagering game having player selection features having reduced volatility index |
| US7837545B2 (en) | 2004-09-03 | 2010-11-23 | Igt | Gaming device having an interactive poker game with predetermined outcomes |
| US7909692B2 (en) | 2004-09-10 | 2011-03-22 | Igt | Apparatus for pre-determined game outcomes |
| US7524243B2 (en) | 2004-09-21 | 2009-04-28 | Igt | Central determination poker game |
| US7674174B2 (en) | 2004-10-18 | 2010-03-09 | Igt | Gaming device having one or more payline awards calculated as a function of the total wager |
| US7862421B2 (en) | 2004-12-06 | 2011-01-04 | Igt | Gaming device and method having increasing payline wager amounts |
| US7815500B2 (en) | 2005-01-07 | 2010-10-19 | Igt | Gaming device having a predetermined result poker game |
| US9105146B2 (en) | 2005-01-31 | 2015-08-11 | Igt | Central determination offer and acceptance game with multiplier |
| US20060279044A1 (en) * | 2005-06-14 | 2006-12-14 | Wms Gaming, Inc. | Wagering game with variable wager denominations |
| US7658672B1 (en) | 2005-08-18 | 2010-02-09 | Igt | Multi-play poker gaming system with predetermined game outcomes |
| JP2007061496A (en) * | 2005-09-01 | 2007-03-15 | Aruze Corp | Game machine |
| US8216065B2 (en) | 2005-09-09 | 2012-07-10 | Igt | Gaming system having multiple adjacently arranged gaming machines which each provide a component for a multi-component game |
| US7727068B2 (en) | 2005-09-12 | 2010-06-01 | Igt | Gaming system having a common display, a first bonus game or a first bonus game paytable and an option to purchase a second bonus game or a second bonus game paytable with relatively expected higher values |
| US20080274783A1 (en) * | 2005-11-09 | 2008-11-06 | Walker Jay S | Session play with high volatility bet option |
| WO2007073534A2 (en) | 2005-12-09 | 2007-06-28 | Igt | Rotor-based gaming device having a system for changing the quantity of potential game outcomes for subsequent plays |
| CA2628974A1 (en) | 2005-12-09 | 2007-06-28 | Igt | Rotor-based gaming device having a secondary award system |
| US8231464B2 (en) | 2005-12-19 | 2012-07-31 | Wms Gaming Inc. | Multigame gaming machine with transmissive display |
| US7857693B1 (en) | 2006-06-20 | 2010-12-28 | Igt | Multi-spin poker gaming system with predetermined game outcomes |
| JP2008017945A (en) | 2006-07-11 | 2008-01-31 | Aruze Corp | Game machine, and game controlling method |
| US8002621B2 (en) | 2006-09-01 | 2011-08-23 | Igt | Gaming device and method having purchasable randomly selected paytables |
| US8109821B2 (en) | 2006-09-08 | 2012-02-07 | Igt | Gaming system and method which enables multiple players to simultaneously play multiple individual games or group games on a central display |
| US8235801B2 (en) | 2006-10-30 | 2012-08-07 | Igt | Gaming system and method for providing enhanced player opportunities for depositing monetary amounts above a designated level |
| US7846018B2 (en) | 2006-11-08 | 2010-12-07 | Igt | Gaming device and method having purchasable enhanced paytables |
| US8033903B2 (en) | 2006-11-10 | 2011-10-11 | Igt | Gaming system and method having progressive free games |
| US8231455B2 (en) | 2007-02-05 | 2012-07-31 | Igt | Method and apparatus for providing a bonus to a player |
| US8915786B2 (en) | 2007-08-09 | 2014-12-23 | Igt | Gaming system and method providing simultaneous gaming with linked paytable events |
| AU2008229938A1 (en) * | 2007-10-17 | 2009-05-07 | Aristocrat Technologies Australia Pty Limited | A gaming system and a method of gaming |
| US8172666B2 (en) | 2008-04-01 | 2012-05-08 | Aruze Gaming America, Inc. | Slot machine |
| US9406190B2 (en) | 2008-07-14 | 2016-08-02 | Cfph, Llc | Information aggregation games |
| US8092301B2 (en) * | 2008-07-14 | 2012-01-10 | Cfph, Llc | Information aggregation games |
| US8591308B2 (en) | 2008-09-10 | 2013-11-26 | Igt | Gaming system and method providing indication of notable symbols including audible indication |
| US7942734B2 (en) * | 2009-02-09 | 2011-05-17 | Cfph, Llc | Amusement devices and games including means for processing electronic data where ultimate outcome of the game is dependent on relative odds of a card combination and/or where chance is a factor: expected biases such as long shot and favorite bias |
| US8070595B2 (en) | 2009-02-10 | 2011-12-06 | Cfph, Llc | Amusement devices and games including means for processing electronic data where ultimate outcome of the game is dependent on relative odds of a card combination and/or where chance is a factor: the monty hall paradox |
| US7980932B2 (en) * | 2009-02-10 | 2011-07-19 | Cfph, Llc | Amusement devices and games including means for processing electronic data where ultimate outcome of the game is dependent on relative odds of a card combination and/or where chance is a factor: wagering on hands of cards |
| US9569932B2 (en) | 2009-07-02 | 2017-02-14 | Igt | Central determination gaming system and method for providing a persistence game with predetermined game outcomes |
| US8613664B2 (en) * | 2009-11-13 | 2013-12-24 | Wms Gaming Inc. | Wagering interface for a gaming system |
| US8632395B2 (en) | 2010-03-01 | 2014-01-21 | Gamblit Gaming, Llc | Enriched game play environment (single and/or multi-player) for casino applications |
| US8932129B2 (en) | 2010-03-12 | 2015-01-13 | Igt | Multi-play central determination system |
| WO2014005157A2 (en) * | 2012-06-30 | 2014-01-03 | Gamblit Gaming, Llc | Hybrid game with omniscience gambling proposition |
| WO2013071261A1 (en) | 2011-11-10 | 2013-05-16 | Mercury And Associates, Structure Ii, Llc | Anti-cheating hybrid game |
| WO2014005158A2 (en) | 2012-06-30 | 2014-01-03 | Gamblit Gaming, Llc | Hybrid game with manual trigger option |
| JP5588577B1 (en) | 2011-06-01 | 2014-09-10 | ギャンブリット ゲーミング，エルエルシー | Systems and methods for regulated hybrid games |
| US8562419B2 (en) | 2011-06-30 | 2013-10-22 | Igt | Gaming system, device, and method providing a multiple streak game |
| JP5680798B2 (en) | 2011-07-12 | 2015-03-04 | ギャンブリット ゲーミング，エルエルシー | Personalized hybrid game |
| CA2859642A1 (en) | 2011-07-18 | 2013-01-24 | Gamblit Gaming, Llc | Systems and methods for credit contribution method for a hybrid game |
| US8357041B1 (en) | 2011-07-21 | 2013-01-22 | Igt | Gaming system and method for providing a multi-dimensional cascading symbols game with player selection of symbols |
| US8430737B2 (en) | 2011-07-21 | 2013-04-30 | Igt | Gaming system and method providing multi-dimensional symbol wagering game |
| US8485901B2 (en) | 2011-07-21 | 2013-07-16 | Igt | Gaming system and method for providing a multi-dimensional symbol wagering game with rotating symbols |
| US9005004B2 (en) | 2011-09-02 | 2015-04-14 | Igt | Gaming system, gaming device, and method providing selectable different roulette wheels for play of roulette game |
| US8986106B2 (en) | 2011-09-02 | 2015-03-24 | Igt | Gaming system, gaming device, and method providing selectable different roulette wheels for play of roulette game |
| US8968073B2 (en) | 2011-09-28 | 2015-03-03 | Igt | Gaming system and method providing a server that determines reel sets for subsequent game plays |
| US8668574B2 (en) | 2011-09-28 | 2014-03-11 | Igt | Gaming system and method providing a user device that receives and stores a reel set for an initial game play and reel sets for subsequent game plays |
| US8591314B2 (en) | 2011-09-28 | 2013-11-26 | Igt | Gaming system and method providing a server that determines a reel set for an initial game play and reel sets for subsequent game plays |
| US8827798B2 (en) | 2011-09-28 | 2014-09-09 | Igt | Gaming system and method providing a user device that receives and stores reel sets for subsequent game plays |
| SG11201401444SA (en) | 2011-10-17 | 2014-05-29 | Gamblit Gaming Llc | Head-to-head and tournament play for enriched game play environment |
| CA2857166A1 (en) | 2011-11-30 | 2013-06-06 | Gamblit Gaming, Llc | Bonus jackpots in enriched game play environment |
| WO2013082546A1 (en) | 2011-11-30 | 2013-06-06 | Gamblit Gaming, Llc | Gambling game objectification and abstraction |
| AU2012347769B2 (en) | 2011-12-06 | 2015-08-13 | Gamblit Gaming, Llc | Multilayer hybrid games |
| US8814656B2 (en) | 2011-12-12 | 2014-08-26 | Igt | Gaming system, gaming device, and method providing one or more wild reel wager options |
| US8475253B1 (en) | 2011-12-15 | 2013-07-02 | Igt | Gaming system, gaming device, and method providing a card game having a discarded card re-insertion feature |
| AU2013207350B2 (en) | 2012-01-05 | 2016-08-11 | Gamblit Gaming, Llc | Head to head gambling hybrid games |
| JP2015511845A (en) | 2012-02-17 | 2015-04-23 | ギャンブリット ゲーミング，エルエルシー | Network hybrid game |
| AU2013222547A1 (en) | 2012-02-22 | 2014-09-25 | Gamblit Gaming, Llc | Insurance enabled hybrid games |
| WO2013138321A1 (en) | 2012-03-14 | 2013-09-19 | Gamblit Gaming, Llc | Autonomous agent hybrid games |
| WO2013163481A1 (en) | 2012-04-25 | 2013-10-31 | Gamblit Gaming, Llc | Randomized initial condition hybrid games |
| WO2013181293A1 (en) | 2012-05-29 | 2013-12-05 | Gamblit Gaming, Llc | Sudoku style hybrid game |
| US9214067B2 (en) | 2012-09-06 | 2015-12-15 | Igt | Gaming system and method for providing a streaming symbols game |
| US9533216B2 (en) * | 2012-09-25 | 2017-01-03 | Igt | Gaming system and method for providing a multiple player game |
| US9039512B2 (en) | 2012-09-27 | 2015-05-26 | Igt | Gaming system and method for providing a game which populates symbols along a path |
| US9028318B2 (en) | 2012-09-27 | 2015-05-12 | Igt | Gaming system and method for providing a game which populates symbols along a path |
| US8992301B2 (en) | 2012-09-27 | 2015-03-31 | Igt | Gaming system and method for providing a game which populates symbols along a path |
| WO2014074751A1 (en) | 2012-11-08 | 2014-05-15 | Gamblit Gaming, Llc | Gambling communicator in gambling communicator hybrid games |
| WO2014074353A1 (en) | 2012-11-08 | 2014-05-15 | Gamblit Gaming, Llc | Systems and methods to use an intermediate value holder in a gambling hybrid game |
| WO2014107259A1 (en) | 2013-01-07 | 2014-07-10 | Gamblit Gaming, Llc | Systems and methods for object alignment game |
| US10665057B2 (en) | 2013-01-10 | 2020-05-26 | Gamblit Gaming, Llc | Gambling hybrid gaming system with accumulated trigger and deferred gambling |
| WO2014121056A1 (en) | 2013-01-31 | 2014-08-07 | Gamblit Gaming, Llc | Intermediate in-game resource hybrid game |
| WO2014123625A1 (en) | 2013-02-11 | 2014-08-14 | Gamblit Gaming, Llc | Gambling hybrid game with a fixed shooter |
| WO2014126942A2 (en) | 2013-02-12 | 2014-08-21 | Gamblit Gaming, Llc | Passively triggered wagering in gambling hybrid games |
| WO2014133906A1 (en) | 2013-02-26 | 2014-09-04 | Gamblit Gaming, Llc | Resource management gambling hybrid games |
| WO2014134581A1 (en) | 2013-02-28 | 2014-09-04 | Gamblit Gaming, Llc | Parallel ai hybrid game |
| US8840457B1 (en) | 2013-03-04 | 2014-09-23 | Igt | Gaming system and method providing a slot game employing a randomly selected set of reels |
| US8851979B2 (en) | 2013-03-07 | 2014-10-07 | Igt | Gaming system and method for providing a symbol elimination game |
| US8784191B1 (en) | 2013-03-07 | 2014-07-22 | Igt | Gaming system and method for providing a symbol elimination game |
| US9177448B2 (en) | 2013-03-11 | 2015-11-03 | Igt | Gaming system and method providing a slot game including a symbol generator modification event |
| AU2014241286A1 (en) | 2013-03-14 | 2015-10-08 | Gamblit Gaming, Llc | Game history validation for networked gambling hybrid games |
| WO2014186340A1 (en) | 2013-05-14 | 2014-11-20 | Gamblit Gaming, Llc | Dice game as a combination game |
| WO2014186342A1 (en) | 2013-05-14 | 2014-11-20 | Gamblit Gaming, Llc | Variable opacity reel in an interactive game |
| WO2014194142A1 (en) | 2013-05-29 | 2014-12-04 | Gamblit Gaming, Llc | User selectable gambling game hybrid game |
| WO2014194143A2 (en) | 2013-05-29 | 2014-12-04 | Gamblit Gaming, Llc | Dynamic wager updating gambling hybrid game |
| WO2014210224A1 (en) | 2013-06-25 | 2014-12-31 | Gamblit Gaming, Llc | Screen activity moderation in a skill wagering interleaved game |
| US9858758B2 (en) | 2013-10-07 | 2018-01-02 | Gamblit Gaming, Llc | Bonus round items in an interleaved wagering system |
| WO2015057977A1 (en) | 2013-10-16 | 2015-04-23 | Gamblit Gaming, Llc | Additional wager in an interleaved wagering system |
| WO2015066478A1 (en) | 2013-10-31 | 2015-05-07 | Gamblit Gaming, Llc | Dynamic multi-currency interleaved wagering system |
| US9691226B2 (en) | 2013-11-07 | 2017-06-27 | Gamblit Gaming, Llc | Side pool interleaved wagering system |
| US20150154832A1 (en) | 2013-12-03 | 2015-06-04 | Gamblit Gaming, Llc | Hotel themed interleaved wagering system |
| US9842465B2 (en) | 2013-12-14 | 2017-12-12 | Gamblit Gaming, Llc | Fungible object award interleaved wagering system |
| US9881452B2 (en) | 2013-12-14 | 2018-01-30 | Gamblit Gaming, Llc | Augmented or replaced application outcome interleaved wagering system |
| US9761085B2 (en) | 2014-01-30 | 2017-09-12 | Gamblit Gaming, Llc | Record display of an interleaved wagering system |
| US9691224B2 (en) | 2014-02-19 | 2017-06-27 | Gamblit Gaming, Llc | Functional transformation interleaved wagering system |
| US9911283B2 (en) | 2014-03-20 | 2018-03-06 | Gamblit Gaming, Llc | Pari-mutuel-based skill wagering interleaved game |
| US9881454B2 (en) | 2014-04-15 | 2018-01-30 | Gamblit Gaming, Llc | Multifaceted application resource interleaved wagering system |
| US10062238B2 (en) | 2014-05-12 | 2018-08-28 | Gamblit Gaming, Llc | Stateful real-credit interleaved wagering system |
| US10311667B2 (en) | 2014-06-02 | 2019-06-04 | Igt | Gaming system volatility marker and gaming system having a volatility marker |
| USD765185S1 (en) | 2014-06-02 | 2016-08-30 | Igt | Gaming system volatility marker |
| US9576427B2 (en) | 2014-06-03 | 2017-02-21 | Gamblit Gaming, Llc | Skill-based bonusing interleaved wagering system |
| US9881461B2 (en) | 2014-06-18 | 2018-01-30 | Gamblit Gaming, Llc | Enhanced interleaved wagering system |
| US9916723B2 (en) | 2014-06-20 | 2018-03-13 | Gamblit Gaming, Llc | Application credit earning interleaved wagering system |
| US9786126B2 (en) | 2014-07-31 | 2017-10-10 | Gamblit Gaming, Llc | Skill-based progressive interleaved wagering system |
| US9922495B2 (en) | 2014-08-01 | 2018-03-20 | Gamblit Gaming, Llc | Transaction based interleaved wagering system |
| US9858759B2 (en) | 2014-08-08 | 2018-01-02 | Gamblit Gaming, Llc | Fungible object interleaved wagering system |
| US9659438B2 (en) | 2014-09-15 | 2017-05-23 | Gamblit Gaming, Llc | Delayed wagering interleaved wagering system |
| US10068427B2 (en) | 2014-12-03 | 2018-09-04 | Gamblit Gaming, Llc | Recommendation module interleaved wagering system |
| US10037658B2 (en) | 2014-12-31 | 2018-07-31 | Gamblit Gaming, Llc | Billiard combined proposition wagering system |
| US9811974B2 (en) | 2015-01-14 | 2017-11-07 | Gamblit Gaming, Llc | Multi-directional shooting interleaved wagering system |
| WO2016115389A1 (en) | 2015-01-15 | 2016-07-21 | Gamblit Gaming, Llc | Distributed anonymous payment interleaved wagering system |
| US10032331B2 (en) | 2015-01-20 | 2018-07-24 | Gamblit Gaming, Llc | Color alteration interleaved wagering system |
| US10055936B2 (en) | 2015-01-21 | 2018-08-21 | Gamblit Gaming, Llc | Cooperative disease outbreak interleaved wagering system |
| US9978206B2 (en) | 2015-03-05 | 2018-05-22 | Gamblit Gaming, Llc | Match evolution interleaved wagering system |
| US10255761B2 (en) | 2015-03-17 | 2019-04-09 | Igt | Gaming system and method for converting primary game outcomes to secondary game outcomes |
| US9911275B2 (en) | 2015-03-27 | 2018-03-06 | Gamblit Gaming, Llc | Multi-control stick interleaved wagering system |
| US9947180B2 (en) | 2015-05-20 | 2018-04-17 | Gamblit Gaming, Llc | Pari-mutuel interleaved wagering system |
| US9916735B2 (en) | 2015-07-22 | 2018-03-13 | Igt | Remote gaming cash voucher printing system |
| US10089825B2 (en) | 2015-08-03 | 2018-10-02 | Gamblit Gaming, Llc | Interleaved wagering system with timed randomized variable |
| US10083575B2 (en) | 2015-09-25 | 2018-09-25 | Gamblit Gaming, Llc | Additive card interleaved wagering system |
| US20170213424A1 (en) | 2015-12-03 | 2017-07-27 | Gamblit Gaming, Llc | Skill-based progressive pool combined proposition wagering system |
| US10186106B2 (en) | 2016-09-21 | 2019-01-22 | Igt | Gaming system and method for determining awards based on interacting symbols |
| US10614674B2 (en) | 2017-04-11 | 2020-04-07 | Gamblit Gaming, Llc | Timed skill objective wagering system |
| US10796525B2 (en) | 2017-09-12 | 2020-10-06 | Gamblit Gaming, Llc | Outcome selector interactive wagering system |
| US10614669B2 (en) | 2018-08-22 | 2020-04-07 | Igt | Central determination gaming system with incrementing awards |
| US20200074805A1 (en) | 2018-08-28 | 2020-03-05 | Igt | Central determination gaming system with limited term persistent elements |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4991848A (en) | 1989-08-07 | 1991-02-12 | Bally Manufacturing Corporation | Gaming machine with a plateaued pay schedule |
| US5393067A (en) | 1993-01-21 | 1995-02-28 | Igt | System, method and apparatus for generating large jackpots on live game card tables |
| US5788573A (en) | 1996-03-22 | 1998-08-04 | International Game Technology | Electronic game method and apparatus with hierarchy of simulated wheels |
| US5720662A (en) * | 1996-05-01 | 1998-02-24 | Holmes, Jr.; Verne F. | Slot machine method |
| US5833538A (en) * | 1996-08-20 | 1998-11-10 | Casino Data Systems | Automatically varying multiple theoretical expectations on a gaming device: apparatus and method |
| US5888136A (en) * | 1997-03-13 | 1999-03-30 | Herbert; Richard A. | Wagering system and method of wagering |
| US5879234A (en) * | 1997-10-01 | 1999-03-09 | Universal De Desarrollos Electronicos, S.A. (Unidesa) | Security system for reel type slot machine with physical mapping to control the win odds |
| US6068552A (en) * | 1998-03-31 | 2000-05-30 | Walker Digital, Llc | Gaming device and method of operation thereof |
-
2000
- 2000-02-09 US US09/500,857 patent/US6302791B1/en not_active Expired - Lifetime
-
2001
- 2001-01-16 ZA ZA200100445A patent/ZA200100445B/en unknown
- 2001-01-17 AU AU15035/01A patent/AU770139B2/en not_active Ceased
- 2001-01-17 CA CA002331243A patent/CA2331243A1/en not_active Abandoned
- 2001-01-26 EP EP01400219A patent/EP1126426A3/en not_active Withdrawn
- 2001-02-08 RU RU2001103774/09A patent/RU2001103774A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| RU2001103774A (en) | 2003-01-27 |
| US6302791B1 (en) | 2001-10-16 |
| AU770139B2 (en) | 2004-02-12 |
| ZA200100445B (en) | 2001-05-07 |
| EP1126426A2 (en) | 2001-08-22 |
| EP1126426A3 (en) | 2003-11-12 |
| AU1503501A (en) | 2001-08-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6302791B1 (en) | Gaming machine with high volatility index | |
| US7594850B2 (en) | Gaming device having high-low game | |
| US6120031A (en) | Game with reservable wild indicia | |
| US8556697B2 (en) | Gaming device having a plurality of interactive player-selectable symbols | |
| US6890255B2 (en) | Multiple wheel roulette game | |
| US7252590B2 (en) | Gaming device having varying risk player selections | |
| US6471587B1 (en) | Game method and device therefor | |
| US6135885A (en) | Electronic football wagering game | |
| US8062119B2 (en) | Apparatus and method for memorization poker | |
| US6739970B2 (en) | Method and device for playing a game in which a player is charged for performing game playing actions | |
| US7780511B2 (en) | Gaming machine having a first bonus event that influences a probability of a second bonus event | |
| US20040152498A1 (en) | Gaming device having a die or dice directly associated with the reels in the primary game | |
| US20060205465A1 (en) | Computer system communicable with one or more gaming devices having a matching game with multiple rounds | |
| US20060189364A1 (en) | Computer system communicable with one or more gaming devices having a matching game | |
| CA2180693C (en) | Game with reservable wild indicia | |
| WO2007142897A2 (en) | Wager-based domino games | |
| AU2003221907A1 (en) | Method of conducting a wagering game | |
| US20050026668A1 (en) | Sequential multi-hand poker game | |
| US20090005168A1 (en) | Electronic or mechanical game with configurable columns | |
| WO2006037164A1 (en) | Gaming apparatus, systems and methods | |
| AU766975B2 (en) | Game with reservable wild indicia | |
| AU2004200323B2 (en) | Game with Reservable Wild Indicia |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |