In various embodiments, the gaming system is configured to operate a slot game including a plurality of reels, one of which includes a plurality of designated symbols adjacent to one another on the reel forming a group of designated symbols. For a play of the game, if at least a first quantity of the designated symbols of the group of designated symbols but less than a second greater quantity of the designated symbols of the group of designated symbols is displayed, the gaming system displays one or more other designated symbols of the group of designated symbols in addition to the displayed designated symbols of the group of designated symbols such that the second greater quantity of the designated symbols is displayed. The gaming system determines and provides any awards based on the displayed symbols including any displayed designated symbols of the second greater quantity of the designated symbols.