EP0058488A1 - An amusement or gaming machine - Google Patents

An amusement or gaming machine Download PDF

Info

Publication number
EP0058488A1
EP0058488A1 EP82300497A EP82300497A EP0058488A1 EP 0058488 A1 EP0058488 A1 EP 0058488A1 EP 82300497 A EP82300497 A EP 82300497A EP 82300497 A EP82300497 A EP 82300497A EP 0058488 A1 EP0058488 A1 EP 0058488A1
Authority
EP
European Patent Office
Prior art keywords
symbols
symbol
player
game
machine
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.)
Withdrawn
Application number
EP82300497A
Other languages
German (de)
French (fr)
Inventor
William Keith Arnold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ACE COIN EQUIPMENT Ltd
Original Assignee
ACE COIN EQUIPMENT Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ACE COIN EQUIPMENT Ltd filed Critical ACE COIN EQUIPMENT Ltd
Publication of EP0058488A1 publication Critical patent/EP0058488A1/en
Withdrawn legal-status Critical Current

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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
    • G07F17/326—Game play aspects of gaming systems
    • G07F17/3262—Player actions which determine the course of the game, e.g. selecting a prize to be won, outcome to be achieved, game to be played
    • G07F17/3265—Influencing the position of stopped moving members to achieve a winning arrangement, e.g. nudging, shuffling, holding

Definitions

  • THIS INVENTION relates to improvements in or relating to amusement or gaming machines.
  • an amusement or gaming machine having a display screen on which is formed an image of a symbol array in which the symbols change during play to form chance combinations, the displayed combination of symbols at the end of a game determining whether or not the player has won according to predetermined rules, in which machine symbol-exchanging means operable by the player are provided to enable the player to exchange the respective positions of at least two of the symbols in a static condition of the array during the course of a game in an attempt to obtain an advantage.
  • the invention finds particular application in the case of a so-called fruit machine in which the image formed on the display screen (for example the screen of a cathode ray tube) consists of a plurality of columns of symbols in side-by-side relationship, each column having the same number of symbols and simulating the visible periphery of a reel rotatable about an axis parallel to the display screen.
  • the symbols progress down the column and disappear from the bottom of the column, while simultaneously fresh symbols appear at the top of the column.
  • the movement of the symbols is stopped and the combination of symbols appearing in the resulting static final image determines whether a player has won.
  • the invention provides a fruit machine having a display screen on which is formed an image consisting of a plurality of columns of symbols, the symbols progressing during play along the column to disappear from one end thereof while fresh symbols appear at the other end of the column, the displayed combination of symbols at the end of the game determining whether or not a player has won according to predetermined rules, in which machine symbol exchanging means operable by the player are provided to enable the player to exchange the respective positions of at least two of the symbols in a static condition of the displayed image during the course of a game in an attempt to obtain an advantage.
  • the symbol exchanging means comprises means for enabling the player to exchange the respective positions of first and second columns of symbols.
  • symbol-exchanging means may be provided for exchanging the positions of third and fourth symbol columns. Provision may be made for effecting either one or both exchanges in a given game.
  • the symbol-exchanging means constitutes an intermittent feature of the machine which is operative only on games selected, for example, at random.
  • the machine may be provided with a warning device, such as a flashing light, to indicate that the symbol-exchanging feature is available.
  • the symbol-exchanging means may, for example, be operable by the player in a static condition of the symbol array at the end of a game in an attempt to achieve a winning combination of symbols, or a combination of symbols resulting in a further opportunity to play being available, or a combination of symbols which may be advantageous at the start of the next game.
  • the symbol-exchanging means may alternatively or additionally be operable by the player in a static condition of the symbol array at the start of a game in an attempt to achieve a combination of symbols which is more advantageous than the existing combination of symbols.
  • the accompanying drawing schematically illustrates, by way of example, a video fruit machine having a display screen 5 constituted by the screen of a cathode ray tube.
  • Electronic circuitry (not shown) of the machine operates in known manner to produce on the screen 5 an image consisting of four columns 1-4 of symbols, each column having five symbols locations 6 and representing the visible periphery of a fruit machine reel rotatable about an axis parallel to the screen.
  • the electronic circuitry of the machine changes the displayed image in such a way that the symbols of a column travel down the column to disappear at the bottom of the column and be replaced by new symbols added to the top of the column, thereby simulating the rotation of reels in a mechanical fruit machine employing rotatable reels.
  • the movement of the symbols is stopped and the combination of symbols on a payline 7 in the resulting static final image normally determines whether or not a player has won.
  • the machine has a first reel-exchange control 8 for exchanging the respective positions of the first and second columns 1 and 2 of the image and a second reel-exchange control 9 for exchanging the respective positions of the third and fourth columns 3 and 4 of the image. Pressing the control 8 and 9 when operative results in the image on the display screen being changed so that the positions of the associated two symbol columns are exchanged.
  • the availability of the option to exchange reel positions in a selected game may be determined at random or according to a predetermined sequence and may be signalled by an indicator 10, such as a flashing light.
  • Figure 1 shows an image on the display screen at the end of a game, where a non-winning combination appears on the payline 7.
  • the letter A is a symbol position denotes a given symbol and the letter X denotes any other symbol.
  • the rules of play are such that the presence on the payline of the same symbol in each of columns 2 to 4 represents a winning combination.
  • the combination of symbols on the payline as shown in Figure 1 is a non-winning combination it can be converted into a winning combination simply by exchanging the positions of the first and second reels 1 and 2.
  • the exchange feature is available at the end of the game represented by Figure 1, the player can simply press the first exchange control 8 to convert the displayed image into that illustrated in Figure 2 so that a winning combination exists on the payline.
  • operation of the second exchange control 9 would not however convert the payline combination into a winning combination.
  • the symbol-exchanging feature provided by the present invention could be used at the end of a game to obtain a combination of symbols which would be advantageous should the hold feature be available on the next game.
  • the symbol-exchanging facility may be used in an attempt to achieve the necessary combination of special symbols and thereby enable the relevant feature game of the machine.
  • a further feature game is a "nudge" feature which is enabled by a particular combination of special "nudge” symbols in the display at the end of a normal game.
  • the symbol-exchanging feature provided by the present invention may be made available at any desired stage during a game when the symbol displayed is static.
  • the symbol-exchanging feature may be available at the start of a game to enable an advantageous position for a subsequent hold feature to be achieved.
  • the symbol-exchanging feature may be made available at different stages during different games.

Abstract

A fruit machine has a display screen (5) on which is formed an image consisting of a plurality of columns of symbols (1-4), the symbols progressing during play along the column to disappear from the bottom end thereof while fresh symbols appear at the top end of the column. The movement of the symbols is stopped at the end of the game to produce a static final image in which the combination of symbols determines whether or not a player has won. Column-exchanging means controlled by player controls (8 and 9) are provided to enable the player to exchange the positions of respective columns of symbols in the display in an attempt to achieve a winning combination.

Description

  • THIS INVENTION relates to improvements in or relating to amusement or gaming machines.
  • According to the invention, in one aspect, there is provided an amusement or gaming machine having a display screen on which is formed an image of a symbol array in which the symbols change during play to form chance combinations, the displayed combination of symbols at the end of a game determining whether or not the player has won according to predetermined rules, in which machine symbol-exchanging means operable by the player are provided to enable the player to exchange the respective positions of at least two of the symbols in a static condition of the array during the course of a game in an attempt to obtain an advantage.
  • The invention finds particular application in the case of a so-called fruit machine in which the image formed on the display screen (for example the screen of a cathode ray tube) consists of a plurality of columns of symbols in side-by-side relationship, each column having the same number of symbols and simulating the visible periphery of a reel rotatable about an axis parallel to the display screen. During a game, the symbols progress down the column and disappear from the bottom of the column, while simultaneously fresh symbols appear at the top of the column. At the end of the game, the movement of the symbols is stopped and the combination of symbols appearing in the resulting static final image determines whether a player has won.
  • Accordingly, in another aspect, the invention provides a fruit machine having a display screen on which is formed an image consisting of a plurality of columns of symbols, the symbols progressing during play along the column to disappear from one end thereof while fresh symbols appear at the other end of the column, the displayed combination of symbols at the end of the game determining whether or not a player has won according to predetermined rules, in which machine symbol exchanging means operable by the player are provided to enable the player to exchange the respective positions of at least two of the symbols in a static condition of the displayed image during the course of a game in an attempt to obtain an advantage.
  • In one embodiment of the invention, the symbol exchanging means comprises means for enabling the player to exchange the respective positions of first and second columns of symbols.
  • If desired, in a machine having a display of four or more columns of symbols, symbol-exchanging means may be provided for exchanging the positions of third and fourth symbol columns. Provision may be made for effecting either one or both exchanges in a given game.
  • Preferably, the symbol-exchanging means constitutes an intermittent feature of the machine which is operative only on games selected, for example, at random. The machine may be provided with a warning device, such as a flashing light, to indicate that the symbol-exchanging feature is available.
  • The symbol-exchanging means may, for example, be operable by the player in a static condition of the symbol array at the end of a game in an attempt to achieve a winning combination of symbols, or a combination of symbols resulting in a further opportunity to play being available, or a combination of symbols which may be advantageous at the start of the next game.
  • The symbol-exchanging means may alternatively or additionally be operable by the player in a static condition of the symbol array at the start of a game in an attempt to achieve a combination of symbols which is more advantageous than the existing combination of symbols.
  • In order that the invention may be readily understood, an embodiment thereof will now be described, by way of example, with reference to the accompanying drawing, in which:
    • FIGURE 1 is a schematic view of the display screen and control panel of a fruit machine embodying the invention before operation of a reel-exchange control of the machine; and
    • FIGURE 2 is a schematic view of the display screen after operation of the reel-exchange control to exchange the positions of the first and second reels.
  • The accompanying drawing schematically illustrates, by way of example, a video fruit machine having a display screen 5 constituted by the screen of a cathode ray tube. Electronic circuitry (not shown) of the machine operates in known manner to produce on the screen 5 an image consisting of four columns 1-4 of symbols, each column having five symbols locations 6 and representing the visible periphery of a fruit machine reel rotatable about an axis parallel to the screen. During a game the electronic circuitry of the machine changes the displayed image in such a way that the symbols of a column travel down the column to disappear at the bottom of the column and be replaced by new symbols added to the top of the column, thereby simulating the rotation of reels in a mechanical fruit machine employing rotatable reels. At the end of a game the movement of the symbols is stopped and the combination of symbols on a payline 7 in the resulting static final image normally determines whether or not a player has won.
  • However, on selected games, the player is given an opportunity to vary the final image in an attempt to achieve a winning combination of symbols. To this end, the machine has a first reel-exchange control 8 for exchanging the respective positions of the first and second columns 1 and 2 of the image and a second reel-exchange control 9 for exchanging the respective positions of the third and fourth columns 3 and 4 of the image. Pressing the control 8 and 9 when operative results in the image on the display screen being changed so that the positions of the associated two symbol columns are exchanged. The availability of the option to exchange reel positions in a selected game may be determined at random or according to a predetermined sequence and may be signalled by an indicator 10, such as a flashing light.
  • Figure 1 shows an image on the display screen at the end of a game, where a non-winning combination appears on the payline 7. In the drawing, the letter A is a symbol position denotes a given symbol and the letter X denotes any other symbol. The rules of play are such that the presence on the payline of the same symbol in each of columns 2 to 4 represents a winning combination. Thus, although the combination of symbols on the payline as shown in Figure 1 is a non-winning combination it can be converted into a winning combination simply by exchanging the positions of the first and second reels 1 and 2. Accordingly, if the exchange feature is available at the end of the game represented by Figure 1, the player can simply press the first exchange control 8 to convert the displayed image into that illustrated in Figure 2 so that a winning combination exists on the payline. Clearly, operation of the second exchange control 9 would not however convert the payline combination into a winning combination.
  • Whilst the above described embodiment of the invention is described as employing a cathode ray tube display, clearly any other form of electronically or optically scanned imaging screen would be suitable.
  • Moreover, while the above embodiment enables two particular combinations of pairs of symbol columns to be exchanged, it is envisaged that the positions of other combinations of columns may be exchanged and even that sub-groups or possibly individual symbols may be exchanged between columns.
  • The simple determination of wins from the combination of symbols on a horizontal payline is described above by way of illustration only. Clearly, the concept of the present invention is applicable to machines having multiple, diagonal and other forms of paylines.
  • Although the exemplary embodiment of the invention has been described as having a symbol-exchanging feature which is available at the end of a game and which is used in an attempt directly to achieve a winning combination of symbols, other possibilities are of course feasible.
  • For example, in the case of a machine having a random "hold" feature whereby individual columns of symbols may be individually or collectively held at the beginning of a game, the symbol-exchanging feature provided by the present invention could be used at the end of a game to obtain a combination of symbols which would be advantageous should the hold feature be available on the next game.
  • Similarly, in a machine with a feature which is enabled by a particular arrangement of special symbols appearing in the display at the end of a game, the symbol-exchanging facility may be used in an attempt to achieve the necessary combination of special symbols and thereby enable the relevant feature game of the machine. One example of such a further feature game is a "nudge" feature which is enabled by a particular combination of special "nudge" symbols in the display at the end of a normal game.
  • It is contemplated that the symbol-exchanging feature provided by the present invention may be made available at any desired stage during a game when the symbol displayed is static. In particular, it is envisaged that the symbol-exchanging feature may be available at the start of a game to enable an advantageous position for a subsequent hold feature to be achieved. Moreover, the symbol-exchanging feature may be made available at different stages during different games.

Claims (8)

1. An amusement or gaming machine having a display screen on which is formed an image of a symbol array in which the symbols change during play to form chance combinations, the displayed combination of symbols at the end of a game determining whether or not the player has won according to predetermined rules, in which machine symbol-exchanging means operable by the player are provided to enable the player to exchange the respective positions of at least two of the symbols in a static condition of the array during the course of a game in an attempt to obtain an advantage.
2. A fruit machine having a display screen on which is formed an image consisting of a plurality of columns of symbols, the symbols progressing during play along the column to disappear from one end thereof while fresh symbols appear at the other end of the column, the displayed combination of symbols at the end of the game determining whether or not a player has won according to predetermined rules, in which machine symbol exchanging means operable by the player are provided to enable the player to exchange the respective positions of at least two of the symbols in a static condition of the displayed image during the course of a game in an attempt to obtain an advantage.
3. A fruit machine according to claim 2, wherein the symbol exchanging means comprises means for enabling the player to exchange the respective positions of first and second columns of symbols.
4. A fruit machine according to claim 3 which has a display of four or more columns of symbols, wherein the symbol-exchanging means comprises means for exchanging the respective positions of third and fourth symbol columns.
5. A machine according to any preceding claim, wherein the symbol-exchanging means constitutes an intermittent feature of the machine which is available only for selected games.
6. A machine according to claim 5 which has a warning device to indicate that the column-exchanging feature is available.
7. A machine according to any preceding claim, wherein the symbol-exchanging means is operable by the player in a static condition of the symbol array at the end of a game.
8. A machine according to any preceding claim, wherein the symbol-exchanging means is operable by the player in a static condition of the symbol array at the start of a game.
EP82300497A 1981-02-02 1982-01-29 An amusement or gaming machine Withdrawn EP0058488A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8103099 1981-02-02
GB8103099 1981-02-02

Publications (1)

Publication Number Publication Date
EP0058488A1 true EP0058488A1 (en) 1982-08-25

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EP82300497A Withdrawn EP0058488A1 (en) 1981-02-02 1982-01-29 An amusement or gaming machine

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EP (1) EP0058488A1 (en)
ES (1) ES8307056A1 (en)
IE (1) IE820202L (en)

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180087A (en) * 1985-07-24 1987-03-18 Bell Fruit Mfg Co Ltd Gaming and amusement machines
US4721307A (en) * 1986-03-17 1988-01-26 Kabushiki Kaisha Universal Slot machine
US5423539A (en) * 1989-09-26 1995-06-13 Sigma, Incorporated Slot machine with payout modifying symbols
WO1997032286A1 (en) * 1996-02-28 1997-09-04 Aristocrat Leisure Industries Pty. Ltd. Slot machine game with dynamic payline
US5704835A (en) * 1995-12-13 1998-01-06 Infinity Group, Inc. Electronic second spin slot machine
GB2296360B (en) * 1994-12-20 1998-09-09 Jpm Int Ltd Improvements relating to gaming or amusement machines
AU704297B2 (en) * 1996-02-28 1999-04-22 Aristocrat Technologies Australia Pty Limited Slot machine game with dynamic payline
US6641477B1 (en) 1995-12-13 2003-11-04 Infinity Group Inc. Electronic second spin slot machine
US6855054B2 (en) * 2001-11-09 2005-02-15 Igt Gaming methods and apparatus using interchangeable symbols
US7357713B2 (en) 2001-11-06 2008-04-15 Igt Electronic game and method for playing a game based upon removal and replacing symbols in the game metrix
US7713122B2 (en) 2005-02-23 2010-05-11 Wms Gaming Inc. Wagering game with bonus game elements dictated by basic game
US7993196B2 (en) 2006-01-20 2011-08-09 Wms Gaming Inc. Wagering game with symbol strings dictating winning outcomes
US8096877B2 (en) 2007-11-07 2012-01-17 Igt Gaming system, gaming device and gaming method providing stacking symbols
US8105151B2 (en) 2008-07-02 2012-01-31 Igt Gaming system, gaming device and method for providing cascading symbols with wild features
US8152623B2 (en) 2004-06-18 2012-04-10 Wms Gaming Inc. Wagering game with two-way cascading reel
US8162741B2 (en) 2007-11-09 2012-04-24 Igt Gaming system, gaming device, and gaming method for transferring symbols between linked reels in multiple reel sets
US8323091B2 (en) 2010-08-09 2012-12-04 Igt Gaming system, gaming device, and method for providing a cascading symbol game including shifting different determined symbols
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
US8366538B1 (en) 2011-07-21 2013-02-05 Igt Gaming system, gaming device and method for providing a multiple dimension cascading symbols game
US8371930B1 (en) 2011-07-21 2013-02-12 Igt Gaming system, gaming device and method for providing a multiple dimension cascading symbols game with a time element
US8414380B2 (en) 2011-07-21 2013-04-09 Igt Gaming system, gaming device and method for providing a multiple dimension cascading symbols game with three dimensional symbols
US8419519B2 (en) 2006-05-04 2013-04-16 Wms Gaming Inc. Wagering game with symbols forming an altered array or secondary array
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
US8512138B2 (en) 2012-01-19 2013-08-20 Igt Gaming system, gaming device, and method for providing a cascading symbols game which reuses discarded symbols
US8556708B2 (en) 2005-01-14 2013-10-15 Wms Gaming Inc. Wagering game with player-determined symbol function
US8574059B2 (en) 2008-11-14 2013-11-05 Igt Gaming system and method for providing a cascading symbol game including a plurality of independent reels which provide a stacked symbol functionality
US8608545B2 (en) 2011-12-06 2013-12-17 Igt Gaming system, gaming device, and method providing a game including a cascading symbols feature causing one or more repositioned symbols to be wild symbols
US8662986B2 (en) 2008-11-13 2014-03-04 Igt Gaming system, gaming device, and method for providing a cascading symbols game having magnetic symbols and target symbols
US8790169B2 (en) 2008-07-23 2014-07-29 Igt Gaming system, gaming device, and method for providing a cascading symbols game with wild symbols usable for a designated quantity of symbol generations
US8882578B2 (en) 2012-01-19 2014-11-11 Igt Gaming system, gaming device, and method for providing a cascading symbols game which reuses discarded symbols
US9005022B2 (en) 2012-01-19 2015-04-14 Igt Gaming system, gaming device, and method for providing a cascading symbols game which builds layers of multiple dimension symbols
US9165433B2 (en) 2009-11-10 2015-10-20 Igt Gaming system, gaming device, and method for providing a cascading symbol game including shifting symbols according to directional indicators
US9202339B2 (en) 2007-11-09 2015-12-01 Igt Gaming system, gaming device, and gaming method for shifting symbols from a staging area to a symbol matrix
US9214067B2 (en) 2012-09-06 2015-12-15 Igt Gaming system and method for providing a streaming symbols game
US9275524B2 (en) 2013-09-17 2016-03-01 Igt Gaming system and method for providing a cascading symbol game with multiple symbol display position elements
US9299224B2 (en) 2013-09-17 2016-03-29 Igt Gaming system and method for providing a cascading symbol game with symbol class eliminations
US9311781B2 (en) 2013-09-17 2016-04-12 Igt Gaming system and method for providing a cascading symbol game with upgrade events
US9349251B2 (en) 2013-09-17 2016-05-24 Igt Gaming system and method for providing a cascading symbol game with upgrade events
US9355528B2 (en) 2013-09-17 2016-05-31 Igt Gaming system and method for providing a cascading symbol game with shifting symbols between multiple symbol display position matrices
US9390587B2 (en) 2013-09-17 2016-07-12 Igt Gaming system and method for providing a cascading symbol game with multiple symbol display position symbols
US9418518B2 (en) 2013-09-17 2016-08-16 Igt Gaming system and method for providing a cascading symbol game with interacting symbols
US9449465B2 (en) 2013-09-17 2016-09-20 Igt Gaming system and method for providing a cascading symbol game with upgrade events
US9460587B2 (en) 2013-09-17 2016-10-04 Igt Gaming system and method for providing a cascading symbol game with shifting symbols in different directions between multiple symbol display position matrices
US9472065B2 (en) 2013-09-17 2016-10-18 Igt Gaming system and method for providing a cascading symbol game with interacting symbols
US9483916B2 (en) 2007-11-09 2016-11-01 Igt Gaming system, gaming device and gaming method providing stacking symbols and convertible reels
US9978221B2 (en) 2013-03-22 2018-05-22 Igt Gaming system and method for providing a multiple dimension symbol game with expanding wild symbols
US10147281B2 (en) 2014-07-24 2018-12-04 Igt Gaming system and method having matching symbol stacks and additional award opportunities
US10607448B2 (en) 2012-09-27 2020-03-31 Igt Gaming system and method for providing a cascading multiple sided symbol game
US10607449B2 (en) 2013-03-08 2020-03-31 Igt Gaming system and method for providing a game including roaming wild symbols

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Cited By (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2180087A (en) * 1985-07-24 1987-03-18 Bell Fruit Mfg Co Ltd Gaming and amusement machines
GB2180087B (en) * 1985-07-24 1989-08-09 Bell Fruit Mfg Co Ltd Gaming and amusement machines
US4721307A (en) * 1986-03-17 1988-01-26 Kabushiki Kaisha Universal Slot machine
US5423539A (en) * 1989-09-26 1995-06-13 Sigma, Incorporated Slot machine with payout modifying symbols
GB2296360B (en) * 1994-12-20 1998-09-09 Jpm Int Ltd Improvements relating to gaming or amusement machines
US5704835A (en) * 1995-12-13 1998-01-06 Infinity Group, Inc. Electronic second spin slot machine
US6641477B1 (en) 1995-12-13 2003-11-04 Infinity Group Inc. Electronic second spin slot machine
WO1997032286A1 (en) * 1996-02-28 1997-09-04 Aristocrat Leisure Industries Pty. Ltd. Slot machine game with dynamic payline
AU704297B2 (en) * 1996-02-28 1999-04-22 Aristocrat Technologies Australia Pty Limited Slot machine game with dynamic payline
US6261178B1 (en) 1996-02-28 2001-07-17 Aristocrat Technologies Australia Pty Ltd. Slot machine game with dynamic payline
US8083581B2 (en) 2001-11-06 2011-12-27 Igt Electronic game and method for playing a game based upon removal and replacing symbols in the game matrix
US7357713B2 (en) 2001-11-06 2008-04-15 Igt Electronic game and method for playing a game based upon removal and replacing symbols in the game metrix
US10115272B2 (en) 2001-11-06 2018-10-30 Igt Electronic game and method for playing a game based upon removal and replacing symbols in the game matrix
US9542808B2 (en) 2001-11-06 2017-01-10 Igt Electronic game and method for playing a game based upon removal and replacing symbols in the game matrix
US10417870B2 (en) 2001-11-06 2019-09-17 Igt Electronic game and method for playing a game based upon symbols in a game matrix
US6855054B2 (en) * 2001-11-09 2005-02-15 Igt Gaming methods and apparatus using interchangeable symbols
US8152623B2 (en) 2004-06-18 2012-04-10 Wms Gaming Inc. Wagering game with two-way cascading reel
US8556708B2 (en) 2005-01-14 2013-10-15 Wms Gaming Inc. Wagering game with player-determined symbol function
US7713122B2 (en) 2005-02-23 2010-05-11 Wms Gaming Inc. Wagering game with bonus game elements dictated by basic game
US7993196B2 (en) 2006-01-20 2011-08-09 Wms Gaming Inc. Wagering game with symbol strings dictating winning outcomes
US8419519B2 (en) 2006-05-04 2013-04-16 Wms Gaming Inc. Wagering game with symbols forming an altered array or secondary array
US8096877B2 (en) 2007-11-07 2012-01-17 Igt Gaming system, gaming device and gaming method providing stacking symbols
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IE820202L (en) 1982-08-02
ES8307056A1 (en) 1983-06-16

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