Gaming system, gaming controller, and a prize triggering method

A gaming system comprising:

• a credit mechanism configured to receive credit input by a player for contribution to a credit balance;
• a display configured to display a plurality of standard symbol positions and optionally one or more additional symbol positions;
• a betting module configured to determine an amount bet and game play instructions on commencement of a game input by the player using a player interface, the bet subtracted from the credit balance;
• a symbol selector configured to select symbols for display in the plurality of standard symbol positions and, based on the amount wagered, is further configured to select and display symbols in the additional symbol position(s) to increase the probability of a win outcome being generated;
• and
• an outcome determiner configured to determine an outcome of the game based on the displayed symbol positions.

A triggering method for a win outcome on a gaming device that includes a game controller, a credit mechanism, and a player interface, said method comprising:

• receiving, by the credit mechanism, credit input by a player for contribution to a credit balance;
• displaying, by the player interface, a number of symbol positions in a reel window of the player interface;
• receiving, by the game controller, a bet and game play instructions for commencement of game play input by the player using the player interface, the bet subtracted from the credit balance;
• increasing, by the game controller, the number of symbol positions displayed in the reel window as a function of the amount bet when the amount bet meets or exceeds a predetermined value to increase the probability of a win outcome being generated.

A non-transitory computer readable medium having a set of instructions for execution on a processor, said set of instructions configured to execute a triggering method for a win outcome on a gaming device having a game controller, a credit mechanism, and a player interface, the triggering method comprising:

• receiving, by the credit mechanism, credit input by a player for contribution to a credit balance;
• displaying, by the player interface, a number of symbol positions in a reel window of the player interface;
• receiving, by the game controller, a bet and game play instructions for commencement of game play input by the player using the player interface, the bet subtracted from the credit balance;
• and
• increasing, by the game controller, the number of symbol positions displayed in the reel window as a function of the amount bet when the amount bet meets or exceeds a predetermined value to increase the probability of a win outcome being generated.