EP0058488A1 - An amusement or gaming machine - Google Patents
An amusement or gaming machineDownload PDFInfo
- Publication number
- EP0058488A1 EP0058488A1EP82300497AEP82300497AEP0058488A1EP 0058488 A1EP0058488 A1EP 0058488A1EP 82300497 AEP82300497 AEP 82300497AEP 82300497 AEP82300497 AEP 82300497AEP 0058488 A1EP0058488 A1EP 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- Withdrawn
Links
- 230000003068static effectEffects0.000claimsabstractdescription12
- 235000013399edible fruitsNutrition0.000claimsabstractdescription10
- 230000002250progressing effectEffects0.000claimsabstractdescription3
- 238000003384imaging methodMethods0.000description1
Images
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 INVENTIONrelates to improvements in or relating to amusement or gaming machines.
- an amusement or gaming machinehaving 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 inventionfinds 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 symbolsprogress 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 symbolsis stopped and the combination of symbols appearing in the resulting static final image determines whether a player has won.
- the inventionprovides 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 meanscomprises means for enabling the player to exchange the respective positions of first and second columns of symbols.
- symbol-exchanging meansmay 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 meansconstitutes an intermittent feature of the machine which is operative only on games selected, for example, at random.
- the machinemay be provided with a warning device, such as a flashing light, to indicate that the symbol-exchanging feature is available.
- the symbol-exchanging meansmay, 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 meansmay 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 drawingschematically 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 machineoperates 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 machinechanges 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 symbolsis 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 machinehas 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 gamemay be determined at random or according to a predetermined sequence and may be signalled by an indicator 10, such as a flashing light.
- Figure 1shows an image on the display screen at the end of a game, where a non-winning combination appears on the payline 7.
- the letter Ais a symbol position denotes a given symbol and the letter X denotes any other symbol.
- the rules of playare 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 1is 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 featureis 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 9would not however convert the payline combination into a winning combination.
- the symbol-exchanging featureprovided 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 facilitymay 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 gameis 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 inventionmay be made available at any desired stage during a game when the symbol displayed is static.
- the symbol-exchanging featuremay be available at the start of a game to enable an advantageous position for a subsequent hold feature to be achieved.
- the symbol-exchanging featuremay be made available at different stages during different games.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Slot Machines And Peripheral Devices (AREA)
- Pinball Game Machines (AREA)
- Display Devices Of Pinball Game Machines (AREA)
Abstract
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 thescreen 5 an image consisting of four columns 1-4 of symbols, each column having fivesymbols 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 apayline 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 andsecond columns exchange control 9 for exchanging the respective positions of the third andfourth columns control 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 ofcolumns 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 andsecond reels 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 thesecond 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.
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 |
|---|---|
| EP0058488A1true EP0058488A1 (en) | 1982-08-25 |
Family
ID=10519389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82300497AWithdrawnEP0058488A1 (en) | 1981-02-02 | 1982-01-29 | An amusement or gaming machine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0058488A1 (en) |
| ES (1) | ES8307056A1 (en) |
| IE (1) | IE820202L (en) |
Cited By (50)
| 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 |
| US10607449B2 (en) | 2013-03-08 | 2020-03-31 | Igt | Gaming system and method for providing a game including roaming wild symbols |
| US10607448B2 (en) | 2012-09-27 | 2020-03-31 | Igt | Gaming system and method for providing a cascading multiple sided symbol game |
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- 1982
- 1982-01-29EPEP82300497Apatent/EP0058488A1/ennot_activeWithdrawn
- 1982-01-29IEIE20282Apatent/IE820202L/enunknown
- 1982-02-02ESES509251Apatent/ES8307056A1/ennot_activeExpired
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| US3918716A (en)* | 1972-07-20 | 1975-11-11 | Clarion Co Ltd | Game apparatus for trying coincidence between randomly selected characters |
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Cited By (85)
| 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 |
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Also Published As
| Publication number | Publication date |
|---|---|
| IE820202L (en) | 1982-08-02 |
| ES509251A0 (en) | 1983-06-16 |
| ES8307056A1 (en) | 1983-06-16 |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase | Free format text:ORIGINAL CODE: 0009012 | |
| AK | Designated contracting states | Designated state(s):AT CH FR GB LI LU NL | |
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| 17P | Request for examination filed | Effective date:19821217 | |
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| RIN1 | Information on inventor provided before grant (corrected) | Inventor name:ARNOLD, WILLIAM KEITH |