Patent attributes
An electronic gaming machine (EGM) is provided. The EGM includes a processor circuit and a memory device which stores a plurality of instructions, which when executed by the processor circuit, cause the processor circuit to perform operations. Operations include causing a display, by a display device and for a first play of a game, of a first plurality of symbols at a first plurality of symbol display positions associated with a plurality of reels. Operations include, responsive to an occurrence of a symbol display location modification event associated with a reel of the plurality of reels, modifying a location of symbol display positions associated with that reel. Operations include, responsive to a modified location of symbol display positions associated with that reel being a designated location, triggering a secondary event associated with an event zone associated with that reel.