An electronic gaming machine includes a game controller configured to execute instructions stored in a tangible, non-transitory, computer-readable storage medium, which, when executed by the game controller, cause the game controller to at least: (i) simulate spinning and stopping a first plurality of reels to display a first plurality of symbols from each reel of the first plurality of reels, wherein, while the first plurality of reels are spinning, a second plurality of reels are held stationary; (ii) determine whether the first plurality of symbols include at least one trigger symbol; and (iii) simulate spinning and stopping, in response to the at least one trigger symbol, the second plurality of reels to display a second plurality of symbols from each reel of the second plurality of reels, wherein, while the second plurality of reels are spinning, the first plurality of reels are held stationary.