Patent ID: 8684815

Claim:
A gaming machine comprising: a display having symbol display areas, each of the symbol display areas displaying a symbol, the symbol display areas being arranged in a matrix of m number of columns and n number of rows, and symbols belonging to each symbol column, which includes a plurality of symbols, being displayed in the symbol display areas in each of the m columns, a first payout table memory storing a relation between winning combinations and outcomes, a second payout table memory storing a relation between a number of paylines of the symbol display areas which is selected by a player and an additional outcome corresponding to the number of the selected paylines, and a controller programmed to: (a) select one or more paylines of the symbol display areas, (b) for the m number of columns, modify a symbol construction of a number of the symbol columns x according to a number of the paylines selected in (a) such that the number of the symbol columns modified x increases as the number of the selected paylines increases, and the symbol construction of each of the modified symbol columns is modified by adding or subtracting an existing column symbol to or from the respective symbol columns so that a winning combination with a higher additional outcome is provided, the number of symbol columns modified x being greater than zero and less than or equal to the m number of columns, (c) determine whether a winning combination is realized based on the symbols displayed on the selected one or more paylines, (d) calculate an outcome based on the realized winning combination and a bet value per the selected one or more pay lines with reference to first payout memory, and (e) add to the calculated outcome the additional outcome obtained based on the number of selected paylines with reference to the second payout table memory.