A gaming machine and method allow a player to play a game. The game has an associated set of game symbols. The game symbols in the set of game symbols are arranged in a predetermined order from lowest to highest. A display device is configured to display a plurality of symbol regions arranged in a grid. The controller is configured to randomly select an initial outcome of the game. The initial outcome of the game includes an initial game symbol associated with each of the symbol regions. The controller detects a triggering condition associated with the initial outcome of the game and responsively replaces the initial game symbol in at least one predetermined symbol region with a replacement symbol to establish a secondary outcome of the game. The replacement symbol is determined as a function of the initial symbol and the predetermined order of the game symbols.