Systems and methods for modifying one or more symbols on one or more still-spinning reels of a wagering game

At least one non-transitory computer-readable storage medium with instructions stored thereon that, in response to execution by at least one processor, cause the at least one processor to:

• cause a plurality of reels spinning to be displayed, wherein each reel of the plurality of reels comprises a respective plurality of symbols;
• determine that a first reel of the plurality of reels has stopped spinning and does not include a trigger symbol displayed thereon;
• and
• based at least in part on the first reel being stopped and not including the trigger symbol displayed thereon, cause the trigger symbol to be replaced with a non-trigger symbol on at least one reel of the plurality of reels still spinning.

A method of electronic gaming implemented by at least one processor in communication with at least one memory, the method comprising:

• causing a plurality of reels to be displayed as spinning for a play of an electronic game, wherein each reel of the plurality of reels comprises a respective plurality of symbols;
• identifying that a first reel of the plurality of reels has stopped spinning and does not include a trigger symbol displayed thereon;
• and
• in response to the first reel being stopped and not including the trigger symbol displayed thereon, causing the trigger symbol to be replaced with a non-trigger symbol on at least one reel of the plurality of reels still spinning.