Patent ID: 7959504

Claim:
A method performed by a gaming device comprising: displaying a first array of symbols in an array of symbol positions that have been randomly selected, certain combinations of symbols along one or more paylines providing an award for a player; detecting a trigger event that initiates a feature game; displaying a plurality of possible features that may be selected in the feature game, the possible features including replacing one or more of the symbols in the first array with particular symbols; after the trigger event has been detected, randomly selecting one of the features to apply to the first array of symbols, wherein the selected feature causes one or more of the symbols in the first array to be replaced with the particular symbols; applying the selected feature to the first array of symbols; and granting any award to a player based on the resulting combination of symbols after one or more of the symbols in the first array are replaced with the particular symbols in accordance with the selected feature, wherein the first array comprises symbols on five virtual reels, and wherein the plurality of features comprise randomly placing a first type of symbol on four of the reels at random positions on the reels.