A gaming machine comprises a display and a game control to control images of symbols to be displayed on the display. Symbols are stored for positioning in an array. The symbols include game-specific standard symbols and bonus symbols and are organized in a predetermined mix and number to define a bonusing scheme for filling positions of the array. The game control randomly selects portions of the array for displaying images of the symbols in a matrix format on the display during a play of the game, and associates symbols within paylines of the matrix to provide play outcomes in accordance with the bonusing scheme and a paytable prescribed for the particular game. The game control is configured to provide play options individually selectable by a player before a play. Each play option has a prescribed set of symbols and each set is designed with a predetermined bonusing scheme.