Abstract: A gaming machine comprising a game controller that enhances a prize won from a game outcome when a first special symbol occurs in the game outcome. The appearance of the first special symbol in the game outcome causes the game controller to further enhance the game prize if a second special symbol also appears in the game outcome. The first or second special symbols may further be used to substitute for another symbol in the game outcome, so as to create a winning game outcome.

Abstract: A gaming machine that provides a wagering game, including a user interface in communication with a game controller, through the operation of which a player selects one of a plurality of wager options that determine a number of symbols to be active and inactive in the wagering game. For at least one said wager option at least one, but not all of the plurality of symbols that define a possible said winning combination are rendered inactive for forming the winning combination.

Abstract: A gaming machine that provides a wagering game, including a user interface in communication with a game controller, through the operation of which a player selects one of a plurality of wager options that determine a number of symbols to be active and inactive in the wagering game. For at least one said wager option at least one, but not all of the plurality of symbols that define a possible said winning combination are rendered inactive for forming the winning combination.

Abstract: A gaming machine that provides a wagering game, including a user interface in communication with a game controller, through the operation of which a player selects one of a plurality of wager options that determine a number of symbols to be active and inactive in the wagering game. For at least one said wager option at least one, but not all of the plurality of symbols that define a possible said winning combination are rendered inactive for forming the winning combination.

Abstract: A method of gaming comprising: conducting an initial play round comprising: selecting and displaying a first set of normal symbols at a plurality of display positions; displaying at least one special symbol at a display position; determining a game outcome based on each at least one special symbol and the first set of normal symbols, and conducting one or more further play rounds until an end condition is met, each further play round comprising: retaining the at least one special symbol from the previous play round; selecting a new display position at random for each retained special symbol; selecting and displaying a further set of normal symbols at a plurality of display positions; and determining a further game outcome based on the new display position of each special symbol and the further set of normal symbols.

Abstract: A gaming machine that provides a wagering game, including a user interface in communication with a game controller, through the operation of which a player selects one of a plurality of wager options that determine a number of symbols to be active and inactive in the wagering game. For at least one said wager option at least one, but not all of the plurality of symbols that define a possible said winning combination are rendered inactive for forming the winning combination.

Abstract: A gaming machine comprising a game controller that enhances a prize won from a game outcome when a first special symbol occurs in the game outcome. The appearance of the first special symbol in the game outcome causes the game controller to further enhance the game prize if a second special symbol also appears in the game outcome. The first or second special symbols may further be used to substitute for another symbol in the game outcome, so as to create a winning game outcome.

Abstract: A method of gaming including: displaying to a player a potential award and an indicator having an indicator state when active during play of a game; changing the indicator state in response to play of the game; changing the potential award in response to play of the game; and awarding the potential award which is displayed when the indicator state is an award state.

Abstract: A gaming system is disclosed which includes a display including a plurality of standard display positions and at least one additional display position. Each standard display position includes at least one visible standard symbol and each additional display position includes at least one visible additional symbol. An additional position selector is arranged to facilitate selection by a player of at least one additional display position. Selection of an additional display position causes an additional symbol displayed at the additional display position to be emphasized relative to when the additional display position is not selected. A symbol selector is arranged to select symbols for display at the standard display positions and at the at least one additional display position. An outcome generator is arranged to determine a game outcome based on symbols displayed at the standard display positions and the or each additional symbol displayed at any selected additional symbol position.

Abstract: A gaming system is disclosed which comprises a display, a symbol selector arranged to select at least a first set of normal symbols to be displayed by the display at a plurality of display positions and to cause a special symbol to be displayed at a display position, a special symbol controller arranged to replicate an aspect of the special symbol until an end condition is met, the special symbol controller arranged to maintain each previously displayed special symbol in the display position where the special symbol occurred, select at least one display position for each replicated aspect of the special symbol and cause each replicated aspect of the special symbol to be displayed at the selected position, and an outcome generator arranged to determine at least one game outcome based on the displayed special symbol, the displayed normal symbols and the replicated aspect of the special symbol. A corresponding method is also disclosed.

Abstract: A method of gaming comprising: conducting an initial play round comprising: selecting and displaying a first set of normal symbols at a plurality of display positions; displaying at least one special symbol at a display position; determining a game outcome based on each at least one special symbol and the first set of normal symbols, and conducting one or more further play rounds until an end condition is met, each further play round comprising: retaining the at least one special symbol from the previous play round; selecting a new display position at random for each retained special symbol; selecting and displaying a further set of normal symbols at a plurality of display positions; and determining a further game outcome based on the new display position of each special symbol and the further set of normal symbols.

Abstract: Gaming methods and apparatus are described for providing a plurality of progressive prizes for a gaming system. Separate progressive prizes are maintained for each of a plurality of different wager options for a game playable on the gaming system. The progressive prizes can be maintained so as to reduce the difference in contribution to the expected return to player between the wager options.