Abstract: A display system of a gaming machine to is controlled display a symbol array including an array area a control play of a game. During the play, game symbol locations are populated in the array area selected from a game symbol set which includes at least a first trigger symbol and a second trigger symbol. Responsive to a winning condition including a predetermined positive number of trigger symbols comprising zero or more of the first trigger symbols and zero or more of the second trigger symbols, a jackpot win round is performed including (i) based on the numbers of first or second trigger symbols in the winning condition, selecting a set of the jackpot prize indicators, and (ii) randomly selecting a jackpot prize indicator from the selected set and awarding an associated jackpot prize for the play at the gaming machine.

Abstract: A gaming machine, system, method, and program product provide a slot machine game with enhanced bonus features. According to one aspect of the invention, a method is provided for controlling the operation of a gaming machine, the method including. The method includes, in response to a play input entered through a player input device of the gaming machine and under control of a processing system of the gaming machine, causing a display system of the respective gaming machine to display a base result representation in a first area of the display system comprising a matrix of symbol locations including multiple columns and rows. Responsive to the presence of a plurality symbols of a first type, including a prize amount, on side-by-side columns in a selected subset of columns, prize amounts on all symbols of the first type in the matrix are awarded.