| CPC G07F 17/3267 (2013.01) [G07F 17/3213 (2013.01); G07F 17/3269 (2013.01)] | 14 Claims |

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1. A computer system comprising one or more processors and memory readable by the one or more processors, the memory having stored thereon computer-executable instructions for causing the one or more processors, when programmed thereby, to perform operations to control a user interface of an electronic gaming device, the operations comprising:
displaying a metamorphic graphical element indicating how many times one or more game instances have been within a threshold range of satisfying a trigger condition for a supplemental feature during a tracking period, wherein the metamorphic graphical element has a current state value;
displaying a result of at least one game instance of the one or more game instances that is within the threshold range of satisfying the trigger condition for the supplemental feature during the tracking period;
determining the current state value of the metamorphic graphical element; and
in response to a determination that the current state value is a highest state value, triggering the supplemental feature; and
in response to a determination that the current state value is less than the highest state value:
obtaining a random number;
selecting a lookup table based on the current state value, wherein different state values are associated with different lookup tables;
applying the random number to the selected lookup table; and
triggering the supplemental feature based on a result of the lookup table.
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