Recherche Images Maps Play YouTube Actualités Gmail Drive Plus »
Connexion
Les utilisateurs de lecteurs d'écran peuvent cliquer sur ce lien pour activer le mode d'accessibilité. Celui-ci propose les mêmes fonctionnalités principales, mais il est optimisé pour votre lecteur d'écran.

Brevets

  1. Recherche avancée dans les brevets
Numéro de publicationUS20010009865 A1
Type de publicationDemande
Numéro de demandeUS 08/835,840
Date de publication26 juil. 2001
Date de dépôt23 avr. 1997
Date de priorité23 avr. 1997
Autre référence de publicationCA2233836A1, EP0874337A1
Numéro de publication08835840, 835840, US 2001/0009865 A1, US 2001/009865 A1, US 20010009865 A1, US 20010009865A1, US 2001009865 A1, US 2001009865A1, US-A1-20010009865, US-A1-2001009865, US2001/0009865A1, US2001/009865A1, US20010009865 A1, US20010009865A1, US2001009865 A1, US2001009865A1
InventeursLawrence E. Demar, Erica Frohm
Cessionnaire d'origineLawrence E. Demar, Erica Frohm
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Gaming machine with bonus mode
US 20010009865 A1
Résumé
A gaming machine is operated by a programmed micro-processor in which the first mode of operation, a basic gambling game, is implemented such as video poker or reel-type slot machine play. If bonus symbols are selected in the basic mode, a bonus mode is triggered. In the bonus mode the same or a different game is implemented by the micro-processor system employing a Bernoulli trial procedure in which the player continues to play and receive awards until a losing combination occurs. The hit rate for the bonus mode is greater than 50% although the overall hold percentage of the game remains below 100%.
Images(10)
Previous page
Next page
Revendications(17)
What is claimed is:
1. A processor controlled game of chance comprising:
a) a processor, operating according to a game program, for randomly selecting symbols and for awarding credits when winning symbol combinations are selected;
b) display means on which said selected symbol combinations are displayed to a game player;
c) said processor operating in a basic mode unless and until a symbol combination, designated as a bonus combination in said game program, is selected, said processor, in said basic mode, selecting symbols and awarding credits or money in response to the input of money or credits by said player;
d) said processor operating in a bonus mode after said bonus combination is selected, said processor, in said bonus mode: (1) selecting symbol combinations as a sequence of Bernoulli trials; (2) displaying the symbol combinations for each trial; (3) awarding credits for winning combinations associated with each trial until a losing combination is selected, said bonus mode having a hit rate for winning combinations in excess of fifty percent;
whereby a player who reaches the bonus mode accumulates credits as a function of the number of Bernoulli trials survived.
2. In a gaming machine including processor means for randomly selecting outcomes, some of which are winners and the remainder being losers; and for awarding credits or money corresponding to said winners, and display means for displaying the selected outcomes the improvement comprising:
a) said processor means being programmed to designate certain outcomes as a bonus event permitting the play of a bonus game;
b) said processor, during bonus game play, iteratively and randomly selecting outcomes as a sequence of Bernoulli trials, displaying said outcomes and awarding the credits associated therewith until a losing outcome is selected, said bonus game having a hit rate for winning combinations in excess of fifty percent;
whereby a player who reaches the bonus game accumulates credits as a function of the number of Bernoulli trials survived.
3. A method of operating a gaming machine having a processor for randomly selecting game outcomes and for awarding credits or money for winning outcomes and, a display for displaying said outcomes to a game player comprising the steps of:
a) operating said processor in a basic mode unless and until an outcome, designated as a bonus event, is selected, said basic mode permitting outcome selection, display and credit awards only in response to the input of a credit by said player;
b) operating said processor in a bonus mode after said bonus event is selected, said bonus mode operation causing:
(1) random selection and display of outcomes as a sequence of Bernoulli trials which continue until a losing trial occurs;
(2) the award of credits or money for winning outcomes for each trial, said bonus mode having a hit rate for winning outcomes in excess of fifty percent;
whereby a player who reaches the bonus mode accumulates credits as a function of the number of Bernoulli trials survived.
4. The device of
claim 1
wherein said processor is programmed to select poker symbols for the basic mode game.
5. The device of
claim 1
wherein said processor is programmed to select poker symbols for the bonus mode game.
6. The device of
claim 1
wherein the display means includes a video display on which the symbols are displayed for the basic game.
7. The device of
claim 1
wherein the display means includes a video display on which the symbols are displayed for the bonus game.
8. The device of
claim 1
wherein the display means includes at least two physical reels having symbols arranged thereon, the selected symbols being displayed to a player by rotation of said reels.
9. The device of
claim 8
wherein said reels are used as the display for the basic game.
10. The device of
claim 8
wherein said reels are used as the display for the bonus game.
11. The device of
claim 1
wherein said display means includes: (a) a reel type display on which selected symbols are displayed to a player by rotation of said reels; and (b) a video display on which symbols may appear;
one of said displays being used for said basic game, the other being used for the bonus game.
12. The device of
claim 1
wherein said processor is programmed to produce an expected value (EV) for said bonus mode greater than 1.0 but wherein the EV of the combined basic and bonus modes is less than 1.0.
13. The device of
claim 2
wherein said processor is programmed to produce an expected value (EV) for said bonus mode greater than 1.0 but wherein the EV of the combined basic and bonus modes is less than 1.0.
14. The method of
claim 3
wherein said processor is programmed to produce an expected value (EV) for said bonus mode greater than 1.0 but wherein the EV of the combined basic and bonus modes is less than 1.0.
15. In a gaming machine including processor means for randomly selecting outcomes, some of which are winners and the remainder being losers; and for awarding credits or money corresponding to said winners, and display means for displaying the selected outcomes the improvement comprising:
a) said processor means being programmed to designate certain outcomes as a bonus event permitting the play of a bonus game;
b) said processor, during bonus game play, iteratively and randomly selecting outcomes each of which is a Bernoulli trial, but wherein p, the probability of success may vary;
c) displaying said outcomes and awarding the credits associated therewith until a losing outcome is selected, said bonus game having a hit rate for winning combinations in excess of fifty percent;
whereby a player who reaches the bonus game accumulates credits as a function of the number of Bernoulli trials survived.
16. The device of
claim 15
wherein said processor initiates a consolation trial if the first Bernoulli trial during bonus game play results in a losing outcome, said consolation trial awarding a randomly determined number of credits as a consolation prize.
17. The method of
claim 3
further including the step of:
c) initiating a consolation trial if the first Bernoulli trial during bonus game play results in a losing outcome, said consolation trial awarding a randomly determined number of credits as a consolation prize.
Description
    BACKGROUND OF THE INVENTION
  • [0001]
    This invention relates to gaming machines. More specifically, it relates to gaming machines of the type used in casinos. Such devices include the familiar spinning reel slot machine, video slot machines, video display poker games and the like. Spinning reel slot machines have maintained their popularity evolving from electromechanical devices to the present day devices which employ micro-processor control. In modern devices the spinning reels are used merely as a display to advise a player if he has won or lost a game of chance played entirely in computer memory according to the rules embedded in a computer program. Video display type gaming machines are similar in terms of their computer program and operation but, in place of spinning reels, a CRT or dot matrix display is provided upon which a simulation of a desired game is presented. For example a poker game, a spinning reel slot machine, a black jack game or other casino game may be simulated on the display. Whether the gaming machine uses spinning reels, a CRT display or some other manner of informing the player of game outcomes, it is necessary that the casino owner make a profit. To that end the game will be percentaged so that some portion of the revenue played into the machine is retained as profit. Thus for every dollar played, on average, a typical gaming machine will retain (hold) between 1% and 25%.
  • [0002]
    With the constraint that there must be a positive hold percentage comes the problem of offering higher awards to induce players to use the equipment. In reel spinning slot machines this has been a formidable problem because the possible outcomes are normally related to the number of stop positions per spinning reel. Thus, in the case of three reels each having 20 stop positions thereon, the probability of any three-symbol combination occurring is one in eight thousand. This provides an upper limit on the amount that may be paid out if a profit is to be made. In an effort to overcome this limitation micro-processor based machines have been developed. The game is played in the micro-processor system and the reels are used merely to display the results. Much greater odds may be employed than permitted by the reel strip size thereby increasing the possible payouts by decreasing the chances that a winning combination will occur.
  • [0003]
    U.S. Pat. No. 4,448,419 to Telnaes provides one solution to this problem. It is desired, however, according to the present invention, to provide a more universal solution which pays high awards while at the same time increasing player enjoyment. The present invention is suitable for implementation in a reel-type slot machine design as will be explained in the description of a preferred embodiment. However, it may also be implemented strictly as a video game, without the use of spinning reels, or it may be used for other types of games or for combinations of games. All that is required is that there be a standard type base game which has a hold percentage built into its table of payouts. In addition, the base game must include a special symbol combination or similar mechanism by which a lucky player can qualify to play a bonus game. The bonus game may be similar to the base game, albeit with different symbol probabilities or it may be a completely separate game on the same or a different display. Thus for example, in a preferred embodiment a reel spinning slot machine is used for the base game while a dot matrix display simulation of a slot machine or card game is used for the bonus game. The pay tables for the basic and bonus games must be mathematically combined such that there is still a positive hold percentage, which represents the profit for the casino establishment. Other combinations of games are clearly suitable for use with the present invention such as a reel spinning slot machine in which the basic game uses a first set of symbol probabilities and the bonus game uses a second set of symbol probabilities. Another possibility is a video poker game for the base game and wherein the bonus game could be a video slot game, or another poker game with a different pay table.
  • [0004]
    A principal feature of the present invention is the structure of the bonus game. A player must play the base game until he qualifies for the bonus game. Qualification is a low frequency event. The bonus game however is a high hit rate game in which the player is expected to win several times in a row and wherein the player is permitted to keep playing and collect his winnings (with or, optionally, without payment of additional coins by the player) until he loses. In the context of a reel-type slot machine, this may be referred to as a “spin 'til you lose” bonus game. It is believed that the thrill and excitement of a bonus game in which a player's probability of winning is significantly greater than 50% and in which he keeps playing until he loses, all the while collecting payouts, will add a new and significantly greater level of player excitement.
  • [0005]
    It is accordingly an object of the present invention to provide a gaming machine in which there is a basic game and a bonus game and wherein the bonus game has a play-until-you-lose-mode in which the probability of winning each trial in the bonus game is greater than 50%.
  • [0006]
    It is another object of the invention to provide a combination gaming machine having basic and bonus modes wherein the basic mode occasionally initiates the bonus mode game which is a high hit-rate game in which the player may continue to play until he loses.
  • [0007]
    It is a further object of the invention to provide a dual mode gaming machine in which a bonus mode has a hit rate of greater than 50% and which is based upon a series of Bernoulli trials which continue until the player loses.
  • [0008]
    These and other objects of the invention will be apparent from the remaining portion of this specification.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0009]
    [0009]FIG. 1 is a simplified illustration of a spinning reel slot machine having a dot matrix display suitable for use with a bonus mode according to the present invention.
  • [0010]
    [0010]FIG. 1A is an enlargement of the slot machine display showing how symbols appear on, above and below the payline.
  • [0011]
    [0011]FIG. 2 is a symbol table for a 22 symbol reel-type slot machine augmented to include bonus symbols (WinStreak) and special blanks (WSBlank) immediately adjacent to the bonus symbols.
  • [0012]
    [0012]FIG. 2A is a math table combining the expected value calculation for the base and bonus games according to an embodiment of the invention.
  • [0013]
    [0013]FIG. 2B is a set of reel strips for the symbol table of FIG. 2 for a base game.
  • [0014]
    [0014]FIG. 3 is a combined symbol and math table for the bonus game according to an embodiment of the invention.
  • [0015]
    [0015]FIG. 3a is a pay table for both the base and bonus games.
  • [0016]
    [0016]FIGS. 4 and 5 are software flow diagrams illustrating how the invention may be implemented.
  • [0017]
    [0017]FIG. 6 is a graph of the Geometric function for Bernoulli trials according to an example of the invention.
  • [0018]
    [0018]FIG. 7 is a consolation table for an optional feature of the invention.
  • DETAILED DESCRIPTION
  • [0019]
    As indicated in the background portion of this specification, the present invention can be implemented using almost any type of gaming device. The game is divided into two parts: a basic game and bonus game. The basic game can be any type of game of chance. Typically it will be a spinning reel slot machine, a video poker game or similar type of game suitable for wagering. In the basic game, some event, or sequence of outcomes which occur at a low frequency permits the playing of the bonus game. The bonus game is another game of chance with a very high hit rate (i.e., the probability that a player will win rather than lose). The hit rate in the bonus game, according to the present invention, should be greater than 50% and is most effective when selected to be greater than 70%. When a trigger event occurs in the base game, play switches to the bonus game. Preferably, play of the bonus game results in a series of free trials i.e., not requiring the game player to insert any additional coins or credits into the machine. Alternately, however, the bonus game can be played by requiring coins or credits with the player knowing that his chance of winning has been significantly increased. If a bonus game trial results in a win, then the player receives the amount associated with that particular win and another play or trial occurs. Trials continue in the bonus game until a losing trial occurs.
  • [0020]
    As indicated previously, the basic game and bonus game may be the same game system with different pay tables and rules. For example, a video poker game could be the base game where a particular hand, such as four-of-a-kind is required to trigger operation of the bonus game. The bonus game however, although the same video poker game, would have a more favorable pay table offering a much higher hit rate. This could also be accomplished by the use of wild cards or other changes to the game rules.
  • [0021]
    It is also contemplated that the base game and bonus game could be executed on the reels of a spinning reel slot machine where the symbols on the reels are given two different sets of probabilities for the base and bonus games. Another alternative is for the two games to be very different, such as a spinning reel slot machine for the base game coupled with a video poker game as the bonus game. It is also contemplated, and disclosed herein as one preferred embodiment, to use a spinning reel slot machine as the base game and a video display type slot machine simulation as the bonus game.
  • [0022]
    Thus, referring to FIG. 1, there is shown a simplified diagram of a reel-type slot machine. The machine 10 includes a display window 12 through which a player may observe three spinning reels, 14, 16 and 18. Game play is initiated by inserting a coin or playing a credit and then pulling the lever 20 or operating a push button switch for the same purpose. A micro-processor then operates according to its game program randomly selecting a reel stop position for each of reels 14, 16 and 18. The reels are set in motion to give the player the feeling of randomness, but in due course the reels are stopped at the preselected stop positions using technology well known in this art which typically includes stepper motors for driving the reels and stopping them at the desired position under processor control. A payline 22 is located centrally of the display 12. Symbols which stop on the payline are evaluated to determine if a winning combination has occurred. If so, in a typical slot machine, a payout is made and the game is over. In some games the symbols above and below the payline are also visible in the display window. This provides additional excitement to the player. In some games, the ability to see the next symbol, above and below the payline, can be used to provide additional entertainment and payoff features. Thus, for example as shown in FIG. 1A, which is an enlargement of the display window 12, three symbols are visible on Reel 14. Symbol A is on the payline, while symbol B is above the payline and symbol C is below the payline. The present invention makes use of this feature of traditional slot machines in a manner to be explained hereafter. With reference to the programming and operation of processor controlled slot machines, the reader is directed to the disclosures in the following U.S. Pat. No. 4,095,795 to Saxton and U.S. Pat. No. 5,456,465 to Durham which are hereby incorporated by reference.
  • DESCRIPTION OF A PREFERRED EMBODIMENT
  • [0023]
    Returning to FIG. 1, according to a preferred embodiment of the invention, the slot machine 10 is provided with a video-type display 32 which may be a CRT or a dot matrix display, as desired. The display is housed in a vertically disposed enclosure secured to the upper portion of the slot machine 10. The display 32 is used for purposes of playing a bonus game. If the bonus game is a poker game for example, a poker hand would be shown on the display and the player paid if a winning hand occurs. Similarly, if the bonus game is a slot machine simulation, spinning symbols would be simulated on the display stopped in various combinations, some of which would constitute winners.
  • [0024]
    There will now be described one embodiment of the invention, which is currently preferred, for implementing the game in a commercial environment. It must be reiterated that this is only one such possibility and that any combination of two suitable games that are percentaged and interoperable according to the present invention may be used. The basic game is played on the spinning reels of the slot machine 10, while the bonus game is played on the dot matrix display 32. The basic game has typical symbols such as Cherry, Single Bar, Double Bar and Triple Bar spaced on the reel strips 14, 16 and 18. Typically these symbols will be randomly displayed on the reel strips, usually separated by a blank, which is itself a symbol. In addition to these standard slot machine symbols, the reel strips also carry a bonus symbol, the selection of which leads to operation of the bonus game as will be described.
  • [0025]
    [0025]FIG. 2 is a table illustrating the reel strip symbol frequency for the base game. The symbols which appear on Reel 1 include: the WinStreak or bonus symbol, the “special” WinStreak blanks on either side of the WinStreak bonus symbol, the 3Bar, 2Bar and 1Bar symbols plus regular blanks and cherries for a total of 22 symbols one at each of 22 reel stop positions. Reels 2 and 3 are similar. A typical symbol layout for this example is shown in FIG. 2b. The occurrence of the various symbols varies from reel to reel, but each reel has but 22 symbols in all and therefore the odds of any possible combination of distinct symbols appearing on the payline is 1 in 10,648 (22×22×22). Thus, according to a preferred implementation of the invention, the base game may be a standard processor controlled spinning reel slot machine, augmented however, with bonus symbols and special blanks. It is substantially similar to the system described in U.S. Pat. No. 4,095,795 to Saxton, albeit a different software algorithm is employed for selecting the symbols.
  • [0026]
    As with most such games, the payout table is set so that the machine retains a percentage of the money played (the hold percentage). Calculation of the hold percentage of the machine however requires inclusion of the bonus game. For illustrative purposes, a typical pay schedule for the reel strips of FIG. 2 is shown in FIG. 2A. The schedule includes the calculated payouts for the bonus game as will be discussed hereafter. FIG. 2A also shows the probability of occurrence of winning combinations and the expected value (EV) from which the hold percentage is calculated. Thus for the reel strip of FIG. 2, the probability of 3 bars occurring is 0.000376 and since it pays 50 coins the EV is (50×0.000376)=0.018783. By summing the EV's for all winning combinations, including the bonus game combinations represented in the schedule as “3WinStreak and “3AnyStreak”, it can be determined that the illustrated embodiment has a hold percentage of 94.4045. That is, for every dollar played, on average, about 94 cents will be returned to the player and 6 cents will be retained as profit.
  • [0027]
    In the basic game when three bonus symbols appear in the display 12 (either on the payline or above or below the payline) the bonus game is initiated. If the three bonus symbols are on the payline, according to the described embodiment, the bonus game is initiated with all awards doubled. According to the preferred embodiment, the bonus game is implemented in a dot matrix video display shown at 32 in FIG. 1. This display is utilized by the processor to simulate a spinning reel slot machine. The symbols used in the bonus game are Cherry, Single Bar, Double Bar, Triple Bar, Blue 7 and Red 7. This is shown in the pay table of FIG. 3. As will be apparent in this example, some symbols appear in the bonus game which do not appear on the basic game reel strips. For simplicity, it is preferable, but not necessary that the bonus game and basic game use the same pay table for common symbols i.e., the same award for 1 or 2 Cherries, and for Any Bar, Single Bar, Double Bar and Triple Bar combinations. Typically posted on the outside of the machine is such a combined pay table including the awards for the 3 Cherries, Any 7, Blue 7 and Red 7 which are only available in the bonus game.
  • [0028]
    In the illustrated implementation, there are 22 reel stop positions on each of 3 reels of the basic game (See FIG. 2). The machine uses a probability of 1 in 22 for each reel stop position on each reel. The bonus symbols (WinStreak) appear two times (at two stop positions) on the 1st reel, three times on the 2nd reel and once on the 3rd reel. Thus, the probability of 3 WinStreak symbols on the payline has a probability of (2*3*1)/(22*22*22)=0.0005634861=A. This is the equal to 1 in 1774.667 spins. Preferably, the multiple instances of the WinStreak symbol on reels 1 and 2 are placed at least 4 stop positions apart such as shown in FIG. 2B. As a result, the blanks above and below the WinStreak symbols will put a WinStreak bonus symbol within one position of the payline. This provides 3 times the number of reel stop positions as there are WinStreak Symbols which may trigger the bonus game. The probability of entering the bonus game is (6*9*3)/(22*22*22)=0.0152141247=B. In summary, a 2× multiplier bonus game (3 WinStreak symbols on the payline) will be achieved with a probability of A. The probability of a regular bonus round played with a 1× multiplier is B-A.
  • [0029]
    A principal feature of the invention is the high hit rate of the bonus game coupled with the spin-til-you-lose concept. The following discussion of the bonus game mathematics will focus on a single coin implementation. It is well known how to extend this to 2-coin, 3-coin, 5-coin or other versions allowing more than one coin to be wagered on each base game.
  • [0030]
    The expected return on a slot machine is computed by combining the probability of each award with the amount of the award as indicated in FIGS. 2 and 3. The expected value (EV) of each award is computed by taking the product of the probability of achieving the award and the number of coins awarded. The sum of each of these products results in the expected return of the slot machine. This result will be in the form of a fraction of 1 coin. The return of the combined game, (basic and bonus games) according to the invention is computed by using this method for each regular symbol combination of the base game, to which is added the expected value of the bonus game combinations. The expected value of the bonus game is computed by multiplying the probability of getting to the bonus game by the expected number of coins awarded in the bonus game. Call the expected value (EV) for coins won in the bonus game “C”. The value “C” is formed from two entries. Entry 1 is the probability of playing the bonus round with a 1× multiplier B-A from the preceding discussion times the EV of the bonus game or ((B-A)*C). Entry 2 is the probability of playing the bonus round with a 2× multiplier (A), times the EV of the bonus game times two or (A*C*2). To obtain the value C requires additional information.
  • [0031]
    The expected value for each spin of the bonus game is computed in the same manner described above, computing the sum of expected values for each possible award. While any commercially successful slot machine must have an expected value of less than 1.00 this restriction does not apply to the bonus game per se. According to the present invention, as long as the value C, when inserted into the expected value equation for the entire game, results in a return for the entire game of less than 1.00, the expected value for the bonus game may be greater than 1.00. The expected coins per spin of the bonus game in the example is X coins. By computing S, the expected number of spins until a loss occurs in the bonus game, C is then computed as the product of this number of spins, times the coins expected per spin, X. That is C=S*X.
  • [0032]
    According to the invention, the bonus game has a hit rate greater than 50% and preferably greater than 70%. Assuming an 85% hit rate, for example, on each spin the probability of losing is approximately 0.15. The bonus game program is configured such that a player continues playing until he loses. One of ordinary skill in probability theory will recognize this mode of operation as a series of Bernoulli trials with p=0.15. That is, a succession of trials (spins) each with a 0.15 probability of “success”. Note that the probability expressed in a Bernoulli trial is usually referred to as the “probability of success” of that trial, but as applied to the bonus game the “success” of a trial corresponds to losing the game (i.e. a non-winning spin). For more information on Bernoulli trials see, for example, Hogg and Tanis “Probability and Statistical Inference” 4ed. pp. 150-171, 1993 Prentice-Hall Inc.
  • [0033]
    The function that shows the probability of “trials until success” of a Bernoulli function (in this case the number of trials until we achieve the 0.15 probability loss) is called the Geometric function (see FIG. 6). This assumes p remains constant. It is permissible for p to vary but the expected trials until success is more difficult to compute. The probability of first success (loss on the bonus game after 1 trial) is 0.15. The probability of success (loss on the bonus game) after 2 trials is 0.85*0.15=0.1275. For three trials, the calculation is 0.85*0.85*0.15=0.108375 and so on. It is well known that the expected value (EV) of the Geometric function is 1/p where p is the probability of “success” on a given trial (i.e. loss on the bonus game). Therefore, S the expected number of spins of a bonus game with a hit rate of 85% is 1/0.15=6.667. Note this includes the final losing turn. The expected value (C) for this bonus game may be computed by multiplying the value of S (6.667) by the expected return per spin (X). That is C=S*X.
  • [0034]
    In practice, it is desirable to vary the payout percentages slightly. Accordingly, the bonus game may be modified to have either a different hit rate or a different average coins per spin value by adjusting the symbol probabilities stored in the computer program. FIG. 3 is an example of such an adjusted pay table. For the example of FIG. 3, the value X, the expected return per spin is 4.1751 (the sum of the EV column) while the hit rate is 84.41% producing a value of S=6.4145. Thus C=6.4145*4.175=26.781.
  • [0035]
    Referring to FIG. 2A the computed values C and 2C (for the 2× multiplier feature) appear in the pay column as the first two entries and are included in the EV column computations which sum to a 94.4045% hold. Thus the expected win for the bonus game is combined with the expected win of the base game to determine the expected value of the combined game. Note that the pay column uses a value of C=27.733 rather than 26.780. This is due to the use of the consolation feature described in connection with FIGS. 5 and 7.
  • [0036]
    From the foregoing, it will be understood that the present invention provides a bonus game based on Bernoulli trials in which a player, who qualifies by playing the base game, can play the bonus game on a spin-til-you-lose basis. The bonus game has a hit rate of greater than 50%, preferably higher than 70%. As a result, the player has a strong inducement to “endure” the base game in order to qualify for bonus game play in which he is statistically likely of winning several times in a row and collecting relatively large payouts, while still returning a profit for the casino establishment.
  • [0037]
    By providing a two stage gaming process in which a traditional game of chance is played as the base game, the existing concept with which players are familiar and comfortable is retained. At the same time, however, a significantly more exciting feature is added in the form of a bonus game. The software implementation of the invention, according to the described embodiment, is relatively straightforward and will be easily understood by those skilled in the art. As the specific programming is dependent upon the hardware employed, including the type of micro-processor selected, it is not useful to provide detailed software listings. For completeness, however, FIGS. 4 and 5 contain a flow diagrams of the manner in which the base and bonus games are implemented in a processor based system. From these diagrams, those skilled in the art will be readily able to program the invention described herein.
  • [0038]
    Referring to FIGS. 4 and 5, initially the processor waits until the player has pulled the handle or pressed a switch to initiate operation of the game. In addition, it is required that the player has placed a bet, i.e., that the amount wagered is greater than zero (Steps 100 and 102). The processor then uses any well known and accepted random number generator algorithm to choose the symbols for display on the reels of the base game (Step 104). A tentative value, Total Pay, is computed based upon a pay table (see, for example, FIG. 3a) for the selected symbol combination (Step 106). The reels 14, 16 and 18, in the case of the slot machine 10 of FIG. 1, are spun for a period of time and then stopped so that the symbols selected appear on the payline (Step 108). Before awarding credits to the player, in the event a winning combination appears on the payline, the program, according to the present invention, first checks to see if 1 WinStreak symbol appears on each reel (Step 110). If so, a bonus game has been earned and the program branches to Step 112 setting the total pay value to zero and the spin count to zero in preparation for initiating operation of the bonus game. If WinStreak symbols do not appear on each reel, either on the payline or above or below the payline, then the program branches to the circle labeled 6 in FIG. 5 where the tentative total pay computed in Step 106 is paid or credited to the player (Step 114) and the game ends (Step 116). As thus far described, this is the operation of a standard slot machine because the bonus feature was not invoked. The player must continue playing the game as described until a WinStreak symbol appears on each reel within the pay window to initiate operation of the bonus game.
  • [0039]
    When that occurs, the program, at Step 112, branches to the bonus game indicated on FIG. 4 beginning at the circle labeled 2. At Step 118 the bonus game multiplier is set equal to one. The program then checks, at Step 120, to determine if the three WinStreak symbols are on the payline. If so, the game multiplier is reset to two (Step 122). In either case, the program then proceeds to wait for the player to initiate operation of the bonus game by pressing a button or pulling a lever at Step 124. This initiates operation of the bonus game display, which in the illustrated embodiment, is played on the dot matrix display 32 of FIG. 1. The processor again uses its random number algorithm to choose the symbols to be displayed for the bonus game (Step 126). A value “Pay” is set equal to the number of coins associated with the chosen display combination at Step 128 and the program continues as shown in FIG. 5 in the circle numbered 4. The Pay value is multiplied by the game multiplier (Step 130) as a function of the outcome of the decision box 120. A cumulative value, Total Pay, is computed as being equal to the previous Total Pays plus the current Pay (Step 132). The program next goes through the process of providing an animation of spinning reels on the dot matrix display and as the reels appear to stop, the selected symbols appear (Step 134). The spin value is then incremented (Step 136) in preparation for the next cycle of the bonus game. Before commencing the next cycle, however, it is determined at Step 138 if the player has won or lost. If he has won, the accumulated winnings are displayed to the player at 140 and the next cycle of the bonus round commences by branching back to FIG. 4 beginning at the circle labeled 3.
  • [0040]
    If, however, it is determined at Step 138 that the player has lost, the program branches to the circle labeled 5. The program then determines whether the value of the spin counter is equal to one, indicating that the player lost on his first turn in the bonus round (Step 142). If so, according to a preferred embodiment of the invention, a consolation award is given. The program chooses a consolation pay amount (Step 144) using a random selection algorithm based, for example, on the second chance table illustrated in FIG. 7. FIG. 7 tabulates the possible pays as a consolation amount to a player who has achieved the bonus round but lost on the first spin. The random selection includes amounts of from three to fifty coins to be paid to the player. FIG. 7 illustrates for each of the possible pay selections, the number of such selections among a schedule of 100 memory locations. Thus there are 32 pays of 3 coins, 45 pays of 5, 20 pays of 10, 2 pays of 20, and but one pay of 50 coins. The expected value for this additional payout is provided in the fourth column of FIG. 7 as 6.11 coins. Since the probability of losing on the first spin is 0.1559 this adds an expected value to the overall game of 0.952536 as illustrated in FIG. 7 and this is added to the expected win value shown in FIG. 3 as 26.78072 to obtain the overall payout shown in FIG. 2a of 27.73326.
  • [0041]
    After the processor chooses a consolation pay amount, the chosen pay amount is multiplied by the game multiplier (either one or two) and the total pay is set equal to the multiplied pay amount (Steps 146, 148). Finally, the amount of the consolation win is displayed, Step 150, and then payment is made at Step 114.
  • [0042]
    If the bonus round loss occurs after the first spin, the program goes from Step 142 to Step 114 where the player is credited with the Total Pay won to that point and the game ends at Step 116.
  • [0043]
    In summary, the disclosed embodiment plays a basic game on a reel type spinning slot machine and a bonus game on a dot matrix display which may be another type of game or a simulation of a reel type slot machine. As shown in FIGS. 4 and 5, the basic game and bonus game operate in a similar manner in a preferred embodiment. With respect to the bonus game, however, a first Bernoulli trial commences. Symbols are selected for display, a simulated reel spinning animation, poker display etc. is provided and then the simulation stops to show the player the selected symbols. If the combination on the payline or the poker hand is a winner, the number of coins determined by the pay table is credited to the player's account. Then a further Bernoulli trial or operation of the game occurs. This continues as long as each trial produces a winning combination. In this manner, the player can quickly accumulate a significant bonus since the hit rate for the bonus game is desirably greater than 50% and preferably greater than 70%. For a typical game (i.e. hit rate approximately equal to) designed according to the invention, it will take between 5 and 6 Bernoulli trails before a losing combination occurs in the bonus game, providing the player with a large bonus and a great deal of excitement as he watches his winnings mount. When, at last, a losing trial occurs, the game is over (unless a loss occurs on the first trial and the optional consolation or second chance feature is employed). It should be noted that the Geometric function has a non zero probability for any number of trials. That is, on occasion 10, 20, 50, 100 or more successive wins in a row are possible.
  • [0044]
    There have been various spinning reel slot machine models that include a feature that will cause the machine to repeatedly spin the reels until a winning combination appears. Examples of such machines are WMS Gaming's “Jackpot Stampede” and IGT's “Spin 'til you win”. These models have some added appeal but the shortcoming is that the player's expectation is crushed once he or she realizes that there is a high likelihood that the first winning combination to hit will be one of the “small” awards (i.e. one cherry). It is believed that no one has heretofore designed a game according to the present invention that allows a player to spin until he loses, collecting all wins along the way.
  • [0045]
    The present invention provides a high hit rate bonus game, so that the expected number of spins until a loser occurs is greater than 6 for the described embodiment and the player's winnings adds up quickly. As the successive Bernoulli trials “fail” (thus extending the game) the player is winning more and more money. As FIG. 6 shows the probability of the number of spins is asymptotic to zero. This means that there is a non-zero probability for each spin count and the bonus game will, on occasion run through a tremendous number of spins accumulating large rewards, something that has never been offered before. The joining of a high hit rate bonus game to a traditional base game is the key to the excitement of this feature.
  • [0046]
    While preferred embodiments of the present invention have been illustrated and described, it will be understood by those of ordinary skill in the art that changes and modifications can be made without departure from the invention in its broader aspects. Various features of the present invention are set forth in the following claims.
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US7032901 *22 avr. 200425 avr. 2006Mikohn Gaming CorporationPoker dice casino game method of play
US706681421 sept. 200127 juin 2006IgtGaming device having regenerating multiple award opportunities
US723501110 sept. 200326 juin 2007IgtGaming device having a bonus game with multiple player selectable award opportunities
US7247091 *3 mars 200324 juil. 2007Moody Ernest WVideo poker games
US725861128 févr. 200221 août 2007IgtGaming device having free game bonus with a changing multiplier
US733186717 juin 200519 févr. 2008IgtGaming device having a re-triggering symbol bonus scheme
US738113427 août 20033 juin 2008IgtGaming device having a multi-function free game bonus
US7533885 *23 févr. 200519 mai 2009IgtGaming device having a rotor-based game with a bonus opportunity
US766608331 août 200523 févr. 2010IgtGaming device having a free spin game including an accumulated modifier
US767417210 nov. 20069 mars 2010IgtGaming device having a wheel-based game
US76822461 sept. 200523 mars 2010IgtGaming device and method having free activation mode and free activation mode with free activation retrigger
US76848748 juin 200723 mars 2010IgtServer based gaming system and method for selectively providing one or more different tournaments
US76848828 juin 200723 mars 2010IgtServer based gaming system and method for selectively providing one or more different tournaments
US76893028 juin 200730 mars 2010IgtServer based gaming system and method for selectively providing one or more different tournaments
US769098622 mai 20066 avr. 2010IgtGaming device having a probability enhancing trigger symbol
US769098714 janv. 20096 avr. 2010IgtGaming device having a free spin game
US7704137 *20 janv. 200427 avr. 2010Wms Gaming Inc.Gaming machine with feature triggering scheme
US770863011 déc. 20064 mai 2010IgtRotor-based gaming device having a system for changing the quantity of potential game outcomes for subsequent plays
US7727069 *22 sept. 20051 juin 2010Bally Gaming, Inc.Embedded reel games with progressives
US773158423 juin 20068 juin 2010IgtGaming device having regenerating multiple award opportunities
US774906329 sept. 20046 juil. 2010IgtGaming device having free spin mode with symbol elimination
US775841630 août 200720 juil. 2010IgtGaming system having a plurality of simultaneously played wagering games that may trigger a plurality of free games which may be played simultaneously with the wagering games
US777587422 mai 200617 août 2010IgtGaming device having a probability enhancing trigger symbol
US77879728 juin 200731 août 2010IgtServer based gaming system and method for selectively providing one or more different tournaments
US778974729 juin 20077 sept. 2010IgtGaming device having a re-triggering symbol bonus scheme with a bonus symbol accumulator
US782426316 oct. 20062 nov. 2010IgtGaming device including a game having a player selected function based on symbols in a free spins game
US78282944 mai 20099 nov. 2010IgtGaming system having a dice-based game with a plurality of wager areas
US785052114 août 200614 déc. 2010IgtGaming device including a game having a wild symbol related award
US785769518 févr. 200828 déc. 2010IgtGaming device including a game having a wild symbol related award
US7862420 *20 août 20034 janv. 2011IgtGaming device having a symbol accumulation game with a physical prize
US7883406 *13 nov. 20038 févr. 2011IgtGaming machines with bonusing
US788741412 juin 200615 févr. 2011IgtBudget-defined flat rate play contract parameters
US790128024 févr. 20098 mars 2011IgtMultiple reel roulette game
US791437412 juin 200629 mars 2011Walker Digital, LlcBudget-defined flat rate play contract parameters
US792720614 févr. 200819 avr. 2011IgtGaming device having a re-triggering symbol bonus scheme
US7938720 *12 sept. 200610 mai 2011Multimedia Games, Inc.Method and apparatus for presenting bingo gaming results using multiple prize distributions
US7942737 *26 oct. 200617 mai 2011IgtGaming device having a game with multiple selections and progressive game incrementation
US795099412 sept. 200531 mai 2011IgtReplacement reel gaming device and method
US799319515 janv. 20089 août 2011IgtGaming device having sequential activations of a game and replay of previous activations of the game
US80073576 juil. 200630 août 2011IgtGaming device having a probability-enhancing trigger symbol
US8021224 *23 avr. 200220 sept. 2011Howard MarksSlot machine game having a plurality of ways for a user to obtain enhanced payouts based on consecutive winning combinations
US8029349 *7 nov. 20054 oct. 2011Multimedia Games, Inc.Networked gaming system with secondary bonus game
US802935816 août 20074 oct. 2011IgtGaming device having free game bonus with a changing multiplier
US803390310 nov. 200611 oct. 2011IgtGaming system and method having progressive free games
US80621252 févr. 201022 nov. 2011Bally Gaming, Inc.High granularity promotion-based awards and use in gaming environments
US806656421 janv. 200829 nov. 2011IgtGaming system and method having wager allocation
US807058330 juil. 20076 déc. 2011IgtServer based gaming system and method for selectively providing one or more different tournaments
US811394211 nov. 200814 févr. 2012IgtGaming system and method having a bonus sequence with available symbols determined in a base game
US811394310 mars 200914 févr. 2012IgtGaming device with changing wild symbols
US81371798 nov. 200620 mars 2012IgtGaming device having expanding and rolling wild symbols
US8147323 *2 mai 20113 avr. 2012Wms Gaming Inc.Gaming machine with visual and audio indicia changed over time
US815217112 févr. 201010 avr. 2012IgtGaming device having a wheel-based game
US817723425 mars 201015 mai 2012IgtRotor-based gaming device having a system for changing the quantity of potential game outcomes for subsequent plays
US817762019 déc. 200315 mai 2012IgtGaming device having a modifier activator
US817763314 août 200815 mai 2012IgtGaming system and method providing an award for designated losing conditions
US82109375 avr. 20113 juil. 2012IgtGaming device having a game with multiple selections and progressive game incrementation
US822120627 janv. 200517 juil. 2012IgtGaming device having a partial selectable symbol matrix
US822121411 déc. 200617 juil. 2012IgtRotor-based gaming device having a secondary award system
US823145617 oct. 200731 juil. 2012IgtGaming device and method providing side bet for winning free activations
US824110828 juin 201114 août 2012IgtGaming device having sequential activations of a game and replay of previous activations of the game
US824644325 mai 201021 août 2012IgtGaming system having a plurality of simultaneously played wagering games that may trigger a plurality of free games which may be played simultaneously with the wagering games
US824644427 janv. 201121 août 2012IgtGaming device having a re-triggering symbol bonus scheme
US825179820 mai 201028 août 2012IgtGaming device having free spin mode with symbol elimination
US825716328 juin 20114 sept. 2012IgtGaming device having sequential activations of a game and replay of previous activations of the game
US827294618 avr. 200825 sept. 2012IgtGaming device having a multi-function free game bonus
US82773059 nov. 20072 oct. 2012IgtGaming device and method for providing a free spin game with payline multipliers
US827730722 févr. 20122 oct. 2012IgtGaming device having expanding and rolling wild symbols
US831337131 mai 200120 nov. 2012Bally Gaming, Inc.Method and apparatus for awarding component prizes in a gaming environment
US83176014 oct. 200127 nov. 2012Bally Gaming, Inc.Bonus game points in a gaming environment
US833729224 sept. 200725 déc. 2012Etasse LimitedSlot machine game with side wager on reel order
US83429415 juil. 20121 janv. 2013IgtRotor-based gaming device having a secondary award system
US836085221 oct. 201129 janv. 2013IgtGaming system and method having wager allocation
US8360857 *9 nov. 200529 janv. 2013IgtSystems, methods and apparatus for facilitating a flat rate play session on a gaming device and example player interfaces to facilitate such
US837682922 avr. 200819 févr. 2013Etasse LimitedSlot machine game with respin feature which identifies potential wins
US8376847 *13 févr. 201219 févr. 2013Bally Gaming, Inc.Embedded reel games with progressives
US840899013 mai 20102 avr. 2013IgtGaming system, gaming device, and method for providing benefit in a future play of a wagering game
US841952514 sept. 201216 avr. 2013IgtGaming device and method for providing a free spin game with payline multipliers
US841954630 août 201016 avr. 2013IgtGaming system and method for selectively providing an elimination tournament that funds an award through expected values of unplayed tournament games of eliminated players
US846009431 août 201111 juin 2013IgtGaming device having free game bonus with a changing multiplier
US846980221 nov. 201125 juin 2013Bally Gaming, Inc.Enhanced game play awards and use in gaming environments
US8480489 *1 févr. 20139 juil. 2013Bally Gaming, Inc.Embedded reel games with progressives
US849139023 sept. 201123 juil. 2013IgtGaming system and method having progressive free games
US849651930 juil. 200830 juil. 2013IgtGaming system and method for providing a bonus event triggered by a continuous communal game
US84965212 janv. 201330 juil. 2013IgtGaming system and method having wager allocation
US852933314 avr. 201110 sept. 2013IgtReplacement reel gaming device and method
US856240718 août 200622 oct. 2013IgtGaming device having a free spin game
US85624108 août 201222 oct. 2013IgtGaming device having sequential activations of a game and replay of previous activations of the game
US8562417 *25 mars 200822 oct. 2013Bally Gaming, Inc.Embedded reel games with progressives
US856241930 juin 201122 oct. 2013IgtGaming system, device, and method providing a multiple streak game
US85624282 nov. 201222 oct. 2013Bally Gaming, Inc.Method and apparatus for awarding component prizes in a gaming environment
US85740678 mai 20125 nov. 2013IgtGaming system and method providing an award for designated losing conditions
US8622829 *2 mai 20137 janv. 2014Bally Gaming, Inc.Portable gaming device
US8636586 *21 sept. 201128 janv. 2014Aristocrat Technologies Australia Pty LimitedSlot machine game and system with improved jackpot feature
US864719430 mai 201311 févr. 2014IgtGaming device having free game bonus with a changing multiplier
US866300024 juin 20134 mars 2014Aristocrat Technologies Australia Pty LimitedSlot machine game and system with improved jackpot feature
US866856722 août 201211 mars 2014IgtGaming device having free spin mode with symbol elimination
US867891821 juin 201225 mars 2014IgtGaming device having a game with multiple selections and progressive award incrementation
US8684816 *15 sept. 20081 avr. 2014Universal Entertainment CorporationSlot machine displaying rendered effects based on proportion of payout amount to bet amount
US868481814 févr. 20121 avr. 2014IgtGaming system, gaming device, and method for providing a replay of previously played games
US869066418 juin 20078 avr. 2014Etasse LimitedSlot machine game with additional award indicator
US869643715 juil. 200815 avr. 2014Wms Gaming Inc.Gaming system having bonus booster features
US870248911 sept. 201222 avr. 2014IgtGaming device having a multi-function free game bonus
US87024937 déc. 200722 avr. 2014Etasse LimitedSlot machine game with award based on another machine
US872143025 juil. 201313 mai 2014IgtGaming system and method having wager allocation
US872786227 déc. 201020 mai 2014IgtMultiple reel roulette game
US8734252 *3 janv. 201427 mai 2014Bally Gaming, Inc.Portable gaming device having embedded reel games with progressives
US87406912 avr. 20133 juin 2014IgtGaming device and method for providing a free spin game with payline multipliers
US8753190 *23 juil. 201217 juin 2014IgtGaming device having a re-triggering symbol bonus scheme
US87841917 mars 201322 juil. 2014IgtGaming system and method for providing a symbol elimination game
US8795056 *8 nov. 20115 août 2014Universal Entertainment CorporationGaming machine running common game
US879506817 oct. 20135 août 2014IgtGaming device having sequential activations of a game and replay of previous activations of the game
US88146698 déc. 200526 août 2014IgtSystems and methods for post-play gaming benefits
US88519797 mars 20137 oct. 2014IgtGaming system and method for providing a symbol elimination game
US8951114 *10 déc. 201210 févr. 2015Wms Gaming Inc.Wagering game with triggering feature for special event
US897964129 oct. 201317 mars 2015IgtGaming system and method providing an award for designated losing conditions
US89861041 oct. 201324 mars 2015IgtGaming system, device, and method providing a multiple streak game
US89861062 sept. 201124 mars 2015IgtGaming system, gaming device, and method providing selectable different roulette wheels for play of roulette game
US899230127 sept. 201231 mars 2015IgtGaming system and method for providing a game which populates symbols along a path
US90050042 sept. 201114 avr. 2015IgtGaming system, gaming device, and method providing selectable different roulette wheels for play of roulette game
US902831827 sept. 201212 mai 2015IgtGaming system and method for providing a game which populates symbols along a path
US903951227 sept. 201226 mai 2015IgtGaming system and method for providing a game which populates symbols along a path
US90822597 juin 201314 juil. 2015Bally Gaming, Inc.Enhanced game play awards and use in gaming environments
US90988478 mars 20134 août 2015IgtGaming system and method for providing a game including roaming wild symbols
US90989738 mars 20134 août 2015IgtGaming system and method for providing a game including roaming wild symbols
US9111421 *21 mars 201118 août 2015Bally Gaming, Inc.Wagering game with hot pick bonus
US91294924 août 20148 sept. 2015IgtGaming system including wild symbols
US916541918 oct. 200720 oct. 2015Etasse LimitedSlot machine bonus game providing awards for manual dexterity
US918992419 juil. 201317 nov. 2015IgtGaming system and method for providing a bonus event triggered by a continuous communal game
US921406126 juin 201415 déc. 2015Universal Entertainment CorporationGaming machine running common game
US92140676 sept. 201215 déc. 2015IgtGaming system and method for providing a streaming symbols game
US923039422 avr. 20145 janv. 2016IgtMultiple reel roulette game
US92628936 sept. 201316 févr. 2016IgtReplacement reel gaming device and method
US928674628 juin 201215 mars 2016IgtGaming system and method having a partial selectable symbol matrix
US929301411 mars 201322 mars 2016IgtGaming device having persistently extending wild symbols
US931178413 août 201412 avr. 2016IgtSystems and methods for post-play gaming benefits
US931800218 mai 201519 avr. 2016IgtGaming system and method for providing a game which populates symbols along a path
US9320970 *26 févr. 201326 avr. 2016IgtSystem controlled player-related bonuses in gaming machines
US936175422 mars 20137 juin 2016IgtGaming system and method for selectively providing an elimination tournament that funds an award through expected values of unplayed tournament games of eliminated players
US93966164 oct. 201319 juil. 2016IgtGaming device having a free spin game
US941222626 août 20159 août 2016IgtGaming system including wild symbols
US9412241 *23 janv. 20149 août 2016Aristocrat Technologies Australia Pty LimitedSlot machine game and system with improved jackpot feature
US943707920 déc. 20126 sept. 2016IgtRotor-based gaming device having a secondary award system
US9449471 *23 mai 201420 sept. 2016IgtGaming device having a re-triggering symbol bonus scheme
US946616927 juil. 201511 oct. 2016IgtGaming system and method for providing a game including roaming wild symbols
US95142707 févr. 20136 déc. 2016IgtGaming system, gaming device, and method for providing benefit in a future play of a wagering game
US95146017 déc. 20156 déc. 2016IgtGaming system and method for providing a streaming symbols game
US9514606 *9 nov. 20076 déc. 2016Bally Gaming, Inc.Wagering game with mystery bonus triggers
US95200317 juil. 200813 déc. 2016Etasse LimitedSlot machine game with symbol lock-in
US95586099 nov. 201531 janv. 2017IgtGaming system and method having a partial selectable symbol matrix
US9558631 *8 août 201631 janv. 2017Aristocrat Technologies Australia Pty LimitedSlot machine game and system with improved jackpot feature
US96074667 sept. 201428 mars 2017Bally Gaming, Inc.Wagering game with evaluable symbols randomly determined by sub-arrays
US963350628 juil. 201525 avr. 2017IgtGaming system and method for providing a game including roaming wild symbols
US963351115 avr. 201625 avr. 2017IgtGaming system and method for providing a game which populates symbols along a path
US96794343 août 201613 juin 2017IgtGaming system including wild symbols
US9704339 *11 janv. 201711 juil. 2017Aristocrat Technologies Australia Pty LimitedSlot machine game and system with improved jackpot feature
US9767636 *26 sept. 200819 sept. 2017Aristocrat Technologies Australia Pty LimitedGaming apparatus and method including oversized symbols
US979277630 déc. 201317 oct. 2017IgtGaming device having free game bonus with a changing multiplier
US9799168 *14 sept. 201624 oct. 2017IgtGaming device having a re-triggering symbol bonus scheme
US20030027626 *23 avr. 20026 févr. 2003Howard MarksSlot machine game having a plurality of ways for a user to obtain enhanced payouts based on consecutive winning combinations
US20030060272 *21 sept. 200127 mars 2003Paulina GlavichGaming device having regenerating multiple award opportunities
US20030162585 *28 févr. 200228 août 2003Bigelow Robert F.Gaming device having free game bonus with a changing multiplier
US20030166411 *3 mars 20034 sept. 2003Moody Ernest W.Video poker games
US20030236115 *24 juin 200225 déc. 2003John ChamberlainGaming apparatus with a consecutive wins multiplier
US20040048652 *11 sept. 200211 mars 2004Ching Erick T.Gaming device having a probability enhancing trigger symbol
US20040053672 *12 sept. 200218 mars 2004Baerlocher Anthony J.Gaming device including a game having a player selected function based on symbols in a free spins game
US20040072612 *31 juil. 200315 avr. 2004Paulina RodgersGaming device including a game having a wild symbol related award
US20040087359 *27 août 20036 mai 2004Cuddy Ryan W.Gaming device having a multi-function free game bonus
US20040097286 *13 nov. 200320 mai 2004Olaf VancuraGaming machines with bonusing
US20040137982 *12 sept. 200315 juil. 2004Cuddy Ryan W.Gaming device having a probability-enhancing trigger symbol
US20050043082 *20 août 200324 févr. 2005Peterson Lance R.Gaming device having a symbol accumulation game with a physical prize
US20050070354 *29 sept. 200431 mars 2005Baerlocher Anthony J.Gaming device having a free spin game
US20050075163 *29 sept. 20047 avr. 2005Cuddy Ryan W.Gaming device having a re-triggering symbol bonus scheme with a bonus symbol accumulation and player selection of accumulation total
US20050159211 *20 janv. 200421 juil. 2005Englman Allon G.Gaming machine with feature triggering scheme
US20050233801 *17 juin 200520 oct. 2005Baerlocher Anthony JGaming device having a re-triggering symbol bonus scheme
US20060058097 *12 sept. 200516 mars 2006Bradley BermanReplacement reel gaming device and method
US20060068885 *1 sept. 200530 mars 2006Cregan Karen MGaming device and method having free activation mode and free activation mode with free activation retrigger
US20060073876 *1 oct. 20046 avr. 2006Cuddy Ryan WGaming device with changing wild symbols
US20060084486 *1 oct. 200420 avr. 2006Belger Matthew EGaming device having sequential activations of a game and replay of previous activations of the game
US20060142077 *19 déc. 200329 juin 2006Miles Michael JEntertainment machines
US20060178198 *8 févr. 200510 août 2006Dustin L. FasbendertGaming method and apparatus offering awards less than the wager amount
US20060199636 *22 mai 20067 sept. 2006IgtGaming device having a probability enhancing trigger symbol
US20060199637 *22 mai 20067 sept. 2006IgtGaming device having a probability enhancing trigger symbol
US20060229127 *12 juin 200612 oct. 2006Walker Jay SBudget-defined flat rate play contract parameters
US20060232003 *12 juin 200619 oct. 2006Walker Jay SBudget-defined flat rate play contract parameters
US20060246989 *23 juin 20062 nov. 2006IgtGaming device having regenerating multiple award opportunities
US20070004489 *10 août 20064 janv. 2007IgtGaming device including a game having a wild symbol related award
US20070010316 *25 juil. 200611 janv. 2007IgtGaming device having a free spin game
US20070021188 *14 août 200625 janv. 2007IgtGaming device including a game having a wild symbol related award
US20070060271 *26 oct. 200615 mars 2007IgtGaming device having a game with multiple selections and progressive game incrementation
US20070060290 *12 sept. 200615 mars 2007Watkins Brian AMethod and apparatus for presenting bingo gaming results using multiple prize distributions
US20070060294 *6 juil. 200615 mars 2007IgtGaming device having a probability-enhancing trigger symbol
US20070060300 *16 oct. 200615 mars 2007IgtGaming device including a game having a player selected function based on symbols in a free spins game
US20070087809 *16 oct. 200619 avr. 2007IgtGaming device including a game having a player selected function based on symbols in a free spins game
US20070105615 *7 nov. 200510 mai 2007Multimedia Games, Inc.Networked gaming system with secondary bonus game
US20070225061 *26 mars 200727 sept. 2007Konami Gaming IncorporatedSlot machine capable of changing game rules
US20080076513 *18 juin 200727 mars 2008Barbara EssesSlot Machine Game with Additional Award Indicator
US20080113751 *10 oct. 200715 mai 2008Aruze Corp.Slot machine and playing method of slot machine
US20080113761 *15 janv. 200815 mai 2008IgtGaming device having sequential activations of a game and replay of previous activations of the game
US20080153570 *17 oct. 200726 juin 2008Barbara EssesSlot machine bonus round with skill level choice
US20080161098 *17 mars 20083 juil. 2008Bally Gaming, Inc.Embedded reel games with progressives
US20080171589 *25 mars 200817 juil. 2008Bally Gaming, Inc.Embedded reel games with progressives
US20080176636 *25 mars 200824 juil. 2008Bally Gaming, Inc.Embedded reel games with progressives
US20080200237 *18 avr. 200821 août 2008IgtGaming device having a multi-function free game bonus
US20090075718 *9 sept. 200819 mars 2009Aruze Corp.Slot Machine Having A Bonus Game
US20090082089 *15 sept. 200826 mars 2009Aruze Corp.Slot Machine Displaying Rendered Effects Based On Proportion Of Payout Amount To Bet Amount
US20090117983 *26 sept. 20087 mai 2009Aristocrat Technologies Australia Pty LimitedGaming Apparatus and Method Including Oversized Symbols
US20090124328 *7 déc. 200714 mai 2009Alvaro NoresSlot Machine Game with Award Based on Another Machine
US20090131147 *14 janv. 200921 mai 2009IgtGaming device having a free spin game
US20090170592 *10 mars 20092 juil. 2009IgtGaming device with changing wild symbols
US20090227331 *15 sept. 200810 sept. 2009Aruze Corp.Gaming machine performing another action to further determine an award if a specified symbol is displayed in a predetermined area
US20090227332 *19 sept. 200810 sept. 2009Aruze Corp.Gaming machine that performs rearranging of identical symbols consecutively in predetermined direction from display position of special symbol
US20100041468 *14 août 200818 févr. 2010IgtGaming system and method providing an award for designated losing conditions
US20100048293 *9 nov. 200725 févr. 2010Wms Gaming Inc.Wagering game with mystery bonus triggers
US20100105463 *6 janv. 201029 avr. 2010Multimedia Games, Inc.System and apparatus for presenting gaming results using multiple prize distributions
US20100151936 *2 févr. 201017 juin 2010Bally Gaming, Inc.High granularity promotion-based awards and use in gaming environments
US20100227666 *15 juil. 20089 sept. 2010Wms Gaming Inc.Gaming system having bonus booster features
US20110124395 *27 janv. 201126 mai 2011ItgGaming device having a re-triggering symbol bonus scheme
US20110130193 *20 mai 20102 juin 2011IgtGaming Device Having Free Spin Mode with Symbol Elimination
US20110207521 *2 mai 201125 août 2011Wms Gaming Inc.Gaming Machine With Visual And Audio Indicia Changed Over Time
US20120034966 *21 mars 20119 févr. 2012Bally Gaming, Inc.Wagering Game with Hot Pick Bonus
US20120094736 *21 sept. 201119 avr. 2012Scott OliveSlot machine game and system with improved jackpot feature
US20120115613 *8 nov. 201110 mai 2012Aruze Gaming America, Inc.Gaming machine running common game
US20120289310 *23 juil. 201215 nov. 2012IgtGaming device having a re-triggering symbol bonus scheme
US20130079104 *3 mai 201228 mars 2013Konami Gaming, Inc.Gaming system and method of providing an electronic game with varying volatility
US20130095917 *10 déc. 201218 avr. 2013Wms Gaming Inc.Wagering Game With Triggering Feature For Special Event
US20130172078 *26 févr. 20134 juil. 2013Igt, A Nevada CorporationSystem controlled player-related bonuses in gaming machines
US20130244753 *2 mai 201319 sept. 2013Bally Gaming, Inc.Portable Gaming Device
US20130267312 *6 mars 201310 oct. 2013Wms Gaming, Inc.Ordered loading of wagering game assets into memory
US20140135099 *23 janv. 201415 mai 2014Aristocrat Technologies Australia Pty LimitedSlot machine game and system with improved jackpot feature
US20140256404 *23 mai 201411 sept. 2014IgtGaming device having a re-triggering symbol bonus scheme
US20160371933 *30 août 201622 déc. 2016IgtRotor-based gaming device having a secondary award system
US20170004682 *14 sept. 20165 janv. 2017IgtGaming device having a re-triggering symbol bonus scheme
WO2009017590A2 *15 juil. 20085 févr. 2009Wms Gaming Inc.Gaming system having bonus booster features
WO2009017590A3 *15 juil. 200830 déc. 2009Wms Gaming Inc.Gaming system having bonus booster features
Classifications
Classification aux États-Unis463/20
Classification internationaleA63F3/00, G07F17/32, A63F7/00
Classification coopérativeG07F17/3244, A63F3/00072, G07F17/32, A63F2007/0064, G07F17/3267
Classification européenneG07F17/32M4, G07F17/32K, G07F17/32
Événements juridiques
DateCodeÉvénementDescription
25 sept. 1997ASAssignment
Owner name: WMS GAMING INC., ILLINOIS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DEMAR, LAWRENCE E.;FROHM, ERICA;REEL/FRAME:008731/0893
Effective date: 19970513