An electronic gaming machine includes a processor configured to control a display device to display a plurality of columns of symbol positions, where each column of symbol positions includes a plurality of symbols selected from an associated reel strip of a plurality of reel strips. The processor is also configured to select the symbols for each column, and control the display device to simulate stopping the first reel strip prior to controlling the display device to simulate stopping the second reel strip, whereby a sub-category of prize associated with a prize sub-category symbol is indicated to a player of the electronic gaming machine prior to indicating a category of prize associated with a prize category symbol. The processor is also configured to determine whether a first column includes the prize sub-category symbol as well as whether a second column includes the prize category symbol. If the prize sub-category and prize category symbols are included, the processor is also configured to provide an award.