An electronic gaming machine includes a processor configured to control display of a plurality of columns of symbol positions, where each column of symbol positions includes a plurality of symbols. The processor is also configured to select the symbols for each column and simulate display of the first reel strip stopping prior to simulating display of the second reel strip stopping, 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.