Patent ID: 11915558
Assignee: IGT
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A gaming system comprising:
a processor; and
a memory device that stores a plurality of instructions that, when executed by the processor for a play of a game, cause the processor to:
at each of a plurality of symbol display positions, cause a display, by a display device, of a symbol,
for a first symbol display position of the plurality of symbol display positions, responsive to the symbol displayed at the first symbol display position being a designated symbol and less than a predefined quantity of designated symbols being previously retained in association with the first symbol display position, cause a display, by the display device, of a retention of that designated symbol displayed at the first symbol display position in association with the first symbol display position,
for a second symbol display position of the plurality of symbol display positions, responsive to the symbol displayed at the second symbol display position being the designated symbol and at least the predefined quantity of designated symbols being previously retained in association with the second symbol display position:
cause a display, by the display device, of a modification of an attribute of the designated symbol previously retained in association with the second symbol display position, the modification of the attribute of the designated symbol previously retained in association with the second symbol display position occurring independent of any modification of the designated symbol displayed at the second symbol display position, and
cause a display, by the display device, of a retention of the modification of the attribute of the designated symbol previously retained in association with the second symbol display position for a predefined quantity of at least one subsequent play of the game.