US Patent 11688229 Gaming device with randomly triggerable feature games

A gaming device that includes a display displaying a plurality of symbols in a plurality of columns of symbol positions, respectively, and a game controller that determines whether the plurality of symbols selected for display include one or both of the first trigger symbol and the second trigger symbol, in response to determining that the symbols include a first trigger symbol but not a second trigger symbol, randomly determines whether to conduct a first feature game, and in response to determining that the symbols selected include both the first trigger symbol and the second trigger symbol, randomly determines whether to conduct a third feature game selected between the first feature game, a second feature game, and a composite game incorporating at least one characteristic of each of the first feature game and the second feature game.