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

Claim 16:
17. 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 each of the plurality of symbol display positions, responsive to the symbol displayed at that symbol display position being a designated symbol and less than a predefined quantity of designated symbols being previously retained in association with that symbol display position, cause a display, by the display device, of a retention of the symbol displayed at that symbol display position in association with that symbol display position, and
for a set of related symbol display positions of the plurality of symbol display positions, responsive to the symbol displayed at a first symbol display position of that set of related symbol display positions being the designated symbol and at least the predefined quantity of designated symbols being previously retained in association with a second symbol display position of that set of related symbol display positions:
cause a display, by the display device, of a modification of at least one of: an attribute of the symbol displayed at the first symbol display position of that set of related symbol display positions and an attribute of the symbol previously retained in association with the second symbol display position of that set of related symbol display positions, the modification of the at least one of: the attribute of the symbol displayed at the first symbol display position of that set of related symbol display positions and the attribute of the symbol previously retained in association with the second symbol display position of that set of related symbol display positions occurring independent of any modification of the symbol displayed at the first symbol display position of that set of related symbol display positions, and
cause a display, by the display device, of a retention of the modification for a predefined quantity of at least one subsequent play of the game.