# US 2018/0025589 A1 · Gaming Machine and Method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0025589 A1 - Document ID: US20180025589A1 - Status: Published application - Kind: A1 - Application number: 15/219,001 - Filed: 2016-07-25 - Published: 2018-01-25 - Earliest claimed: 2016-07-25 - Assignees: Ainsworth Game Technology Limited - Applicants: Ainsworth Game Technology Limited - Inventors: Joseph Luong - Web page: https://patentgrep.com/patent/US20180025589A1 ## CPC - G07F 17/34: depending on the stopping of moving members {in a mechanical slot machine}, e.g. "fruit" machines - G07F 17/3209: {Input means, e.g. buttons, touch screen} - G07F 17/3213: {Details of moving display elements, e.g. spinning reels, tumbling members} - G07F 17/3244: {Payment aspects of a gaming system, e.g. payment schemes, setting payout ratio, bonus or consolation prizes} - G07F: COIN-FREED OR LIKE APPARATUS (coin sorting G07D3/00; coin testing G07D5/00; {handling coins or paper currencies apart from payment activated apparatus G07D; payment architectures, schemes or protocols G06Q20/00}) ## Abstract The invention provides a gaming machine comprising a display for displaying a game, a game controller and a value transfer mechanism. The game comprises randomly selected game symbols displayed in an array of game positions and where predetermined winning combinations of said randomly selected game symbols in said game award prizes. The game controller configures the array so that it comprises at least one non-game symbol position in which only a non-game symbol can be displayed. The non-game symbol is a symbol that does not form part of any of the predetermined winning combinations. The display of the non-game symbol and at least one of the predetermined winning combinations in a first play of the game causes the game controller to enhance the prize awarded for the at least one predetermined winning combination. A method is also provided. ## Claims ### Claim 1 A gaming machine comprising: a display for displaying a game, wherein said game comprises randomly selected game symbols displayed in an array of game positions and where predetermined winning combinations of said randomly selected game symbols in said game award prizes to a player; a game controller for controlling the display of said game symbols on said display; and a value transfer mechanism for receiving value from said player, wherein said game controller communicates with said value transfer mechanism such that when a threshold amount of value has been received from said value transfer mechanism, said game controller initiates a play of said game; wherein said game controller configures said array so that said array comprises at least one non-game symbol position in which only a non-game symbol can be displayed, said non-game symbol being a symbol that does not form part of any of said predetermined winning combinations; and wherein the display of said non-game symbol and at least one of said predetermined winning combinations in a first play of said game causes said game controller to enhance the prize awarded for said at least one predetermined winning combination. ### Claim 2 (depends on 1) The gaming machine of claim 1, wherein said non-game symbol comprises a bonus symbol, wherein said bonus symbol increases the prize awarded for said at least one predetermined winning combination. ### Claim 3 (depends on 2) The gaming machine of claim 2, wherein said bonus symbol comprises a multiplier symbol and said prize is multiplied by a value associated with said multiplier symbol. ### Claim 4 (depends on 3) The gaming machine of claim 3, wherein said prize is multiplied by said value associated with said multiplier symbol when a substitute game symbol forms part of said at least one predetermined winning combination. ### Claim 5 (depends on 3) The gaming machine of claim 3, wherein said value associated with said multiplier symbol increases each time said multiplier symbol appears in a subsequent play of said game. ### Claim 6 (depends on 5) The gaming machine of claim 5, wherein said value associated with said multiplier symbol increases by one for each multiplier symbol that appears in a subsequent play of said game. ### Claim 7 (depends on 5) The gaming machine of claim 5, wherein said value associated with said multiplier symbol increases by uniform increments for each multiplier symbol that appears in a subsequent play of said game. ### Claim 8 (depends on 5) The gaming machine of claim 5, wherein said value associated with said multiplier symbol increases by in variable increments for each multiplier symbol that appears in a subsequent play of said game. ### Claim 9 (depends on 5) The gaming machine of claim 5, wherein said multiplier symbol is not displayed in said non-game symbol position after said value associated with said multiplier symbol reaches a maximum value. ### Claim 10 (depends on 9) The gaming machine of claim 9, wherein there is a plurality of non-game symbols and said at least one non-game symbol position randomly displays non-game symbols other than said multiplier symbol. ### Claim 11 (depends on 10) The gaming machine of claim 10, wherein one of said non-game symbols comprises a free games symbol, said free games symbol awarding additional plays of said game without requiring a bet from said player. ### Claim 12 (depends on 9) The gaming machine of claim 9, wherein said at least one non-game symbol position also randomly displays a blank symbol and said blank symbol does not enhance the award of prizes for said at least one predetermined winning combination. ### Claim 13 (depends on 2) The gaming machine of claim 2, wherein said bonus symbol comprises a credit bonus symbol and said prize is increased by a value associated with said credit bonus symbol. ### Claim 14 (depends on 1) The gaming machine of claim 1, wherein said non-game symbol comprises a free games symbol, said free games symbol awarding additional plays of said game without requiring a bet from said player. ### Claim 15 (depends on 1) The gaming machine of claim 1, wherein said at least one non-game symbol position also randomly displays a blank symbol, said blank symbol does not affect the award of prizes for predetermined winning combinations. ### Claim 16 (depends on 1) The gaming machine of claim 1, wherein said at least one non-game symbol position comprises a reel that randomly displays said non-game symbols. ### Claim 17 (depends on 1) The gaming machine of claim 1, wherein there are two non-game symbol positions in said array. ### Claim 18 (depends on 17) The gaming machine of claim 17, wherein said non-game symbol positions each comprises a reel that randomly displays said non-game symbols. ### Claim 19 (depends on 17) The gaming machine of claim 17, wherein said non-game symbol positions are aligned in said array. ### Claim 20 (depends on 17) The gaming machine of claim 17, wherein said non-game symbol positions are located opposite each other in said array. ### Claim 21 (depends on 17) The gaming machine of claim 17, wherein said array comprises a plurality of rows and/or columns and said non-game symbol positions are in the same row. ### Claim 22 (depends on 17) The gaming machine of claim 17, wherein said array comprises a plurality of rows and/or columns and said non-game symbol positions are in the same column. ### Claim 23 (depends on 22) The gaming machine of claim 22, wherein said columns that do not have said non-game symbol positions comprise reels. ### Claim 24 (depends on 22) The gaming machine of claim 22, wherein said array comprises three rows and five columns, said non-game symbol positions being located in a top and a bottom row of a middle column.