An electronic gaming system includes a game controller configured to control a display device to present a game area, where the game area is configured to display a plurality of reel strips. Further, the game controller may select a reel layout for at least one reel strip, where the selected reel layout specifies a size of at least one oversized symbol and a location of the at least one oversized symbol on the symbol display positions of the at least one reel strip. In addition, the game controller may select a first oversized symbol corresponding to the size of the at least one oversized symbol specified by the selected reel layout, and/or add the first oversized symbol to the at least one reel strip at the location specified by the reel layout.