| CPC G07F 17/3213 (2013.01) [G07F 17/326 (2013.01); G07F 17/3267 (2013.01)] | 20 Claims |
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1. A system comprising:
one or more displays;
one or more processors; and
one or more memory devices, the one or more memory devices storing computer-executable instructions which, when executed by the one or more processors, cause the one or more processors to:
cause a graphical user interface (GUI) for a base game of chance to be presented on the one or more displays, the GUI including a plurality of symbol positions arranged into X adjacent columns, each column having a corresponding base number of symbol positions;
cause, responsive to each receipt of a signal indicating a play of the base game of chance, each symbol position of the plurality of symbol positions to display a corresponding symbol having a symbol type selected from a plurality of different symbol types, the different symbol types including at least a first symbol type;
cause, responsive to a first triggering condition being met, a feature game to be initiated and a GUI for the feature game to be presented on the one or more displays, wherein the GUI for the feature game that is presented includes the plurality of symbol positions and any of the symbols of the first symbol type that are displayed in the symbol positions;
cause, responsive to each receipt of a signal indicating a play of the feature game and for each of the symbol positions not displaying a symbol of the first symbol type, a symbol of one of the symbol types to be selected and displayed in that symbol position as part of the play of the feature game;
cause, for each column having less than a corresponding maximum number of symbol positions and in which the symbol displayed in each symbol position of that column as a result of a play of the feature game is of the first type of symbol:
an additional symbol position to be added to that column, and
the symbols of the first symbol type displayed in the symbol positions of that column to cease to be displayed in the symbol positions of that column;
cause, responsive at least in part to a first column of the X columns having the corresponding maximum number of symbol positions, a bonus game to be initiated and a GUI for the bonus game to be presented on the one or more displays, the GUI for the bonus game including a plurality of outcome indicators; and
cause, responsive to each receipt of a signal indicating a play of the bonus game, one of the outcome indicators to be indicated as a selected outcome indicator by the GUI for the bonus game.
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