| CPC G07F 17/3267 (2013.01) [G07F 17/3211 (2013.01); G07F 17/3244 (2013.01)] | 23 Claims |

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1. A gaming system comprising:
a gaming machine comprising a presentation assembly configured to present a plurality of symbol positions and one or more persistent elements, each of the one or more persistent elements associated with a respective one or more bonus game features; and
game-logic circuitry in communication with the presentation assembly, the game-logic circuitry configured to:
cause the presentation assembly to present one or more game outcomes by populating the plurality of symbol positions with a respective set of randomly selected symbols for each of the one or more game outcomes;
in response to detecting a catalyst event including detecting a feature-triggering symbol within the respective set of randomly selected symbols for any of the one or more game outcomes:
cause the presentation assembly to animate an addition of the feature-triggering symbol to a first persistent element of the one or more persistent elements;
randomly select an outcome state of the catalyst event from a plurality of outcome states, the plurality of outcome states including a first state associated with the one or more bonus game features linked to the first persistent element and a second state associated with an award value visually indicated by award indicia of the feature-trigger symbol;
in response to selecting the first state, cause the presentation assembly to present one or more bonus game outcomes based on the one or more bonus game features linked to the first persistent element; and
in response to selecting the second state, cause the presentation assembly to present an award sequence for an award including the award value visually indicated by the award indicia of the feature-trigger symbol.
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