Gaming machine and method with multiplier effects

1. A method for controlling operation of a gaming machine, the method including:

(a) 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 gaming machine to display a base result representation in a first area of the display system comprising a matrix of symbol locations including a first line of symbols randomly selected from among multiplier symbols and non-operative symbols, a second line of symbols randomly selected from among multiplier symbols and non-operative symbols, and a third line of symbols randomly selected from among prize symbols and non-operative symbols, the prize symbols comprising multiple-location symbols spanning multiple adjacent symbol locations and single location symbols;

(b) in response to an alignment of a prize symbol with a first plurality of multiplier symbols along a single alignment path defined through the matrix, awarding a prize amount of a prize associated with the prize symbol times a combined multiplier value indicated by the multiplier symbols;

(c) in response to an alignment of a multiple-location prize symbol along multiple alignment paths defined through the matrix, each alignment path including a plurality of multiplier symbols, awarding a prize amount of a prize associated with the multiple-location prize symbol times a combined multiplier value calculated as a product of all the multiplier symbols aligned across the multiple alignment paths; and

(d) causing the display system to display a graphic sequence visually combining the plurality of multiplier symbols from the multiple alignment paths into a single larger multiplier symbol representing the combined multiplier value, thereby providing visual feedback to a player of the combined multiplier effect.

2. The method of claim 1 , wherein the first, second, and third lines of symbols are slot machine reels.

3. The method of claim 1 , further comprising in response to a trigger condition for the play input and under control of the processing system, causing the display system to display an operation of a prize selector to select a prize amount from among a plurality of available prize amounts and causing the display system to replace a symbol in the third line of symbols with a new prize symbol associated with the prize amount before awarding a prize.

4. The method of claim 3 , wherein the trigger condition is a designated symbol appearing in the third line of symbols.

5. The method of claim 3 , wherein the prize selector is a selector wheel positioned in a second display area of the display system.

6. The method of claim 1 , further comprising, in response to a bonus trigger event, entering a bonus mode in which at least one of the first, second, and third lines of symbols includes no non-operative symbols.

7. The method of claim 6 , further comprising, in which the third line of symbols includes no non-operative symbols.

8. A gaming machine comprising:

a display system, an audio device, a player input device, and at least one electronic controller operatively coupled to the display system, the audio device, and the player input device and configured to execute instructions related to a game; and

tangible, non-transitory electronically accessible memory coupled to the at least one electronic controller and containing program code executable by the at least one electronic controller for:

(a) 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 gaming machine to display a base result representation in a first area of the display system comprising a matrix of symbol locations including a first line of symbols randomly selected from among multiplier symbols and non-operative symbols, a second line of symbols randomly selected from among multiplier symbols and non-operative symbols, and a third line of symbols randomly selected from among prize symbols and non-operative symbols, the prize symbols comprising multiple-location symbols spanning multiple adjacent symbol locations and single location symbols;

(b) in response to an alignment of a prize symbol with a first plurality of multiplier symbols along a single alignment path defined through the matrix, awarding a prize amount of a prize associated with the prize symbol times a combined multiplier value indicated by the multiplier symbols;

(c) in response to an alignment of a multiple-location prize symbol along multiple alignment paths defined through the matrix, each alignment path including a plurality of multiplier symbols, awarding a prize amount of a prize associated with the multiple-location prize symbol times a combined multiplier value calculated as a product of all the multiplier symbols aligned across the multiple alignment paths; and

(d) causing the display system to display a graphic sequence visually combining the plurality of multiplier symbols from the multiple alignment paths into a single larger multiplier symbol representing the combined multiplier value, thereby providing visual feedback to a player of the combined multiplier effect.

9. The gaming machine of claim 8 , wherein the first, second, and third lines of symbols are slot machine reels.

10. The gaming machine of claim 8 , further comprising in response to a trigger condition for the play input and under control of the processing system, causing the display system to display an operation of a prize selector to select a prize amount from among a plurality of available prize amounts and causing the display system to replace a symbol in the third line of symbols with a new prize symbol associated with the prize amount before awarding a prize.

11. The gaming machine of claim 10 , wherein the trigger condition is a designated symbol appearing in the third line of symbols.

12. The gaming machine of claim 11 , wherein the prize selector is a selector wheel positioned in a second display area of the display system.

13. The gaming machine of claim 8 , further comprising, in response to a bonus trigger event, entering a bonus mode in which at least one of the first, second, and third lines of symbols includes no non-operative symbols.

14. The gaming machine of claim 13 , in which the third line of symbols includes no non-operative symbols.

15. A tangible, non-transitory computer readable medium holding a program product for execution by a controller of a gaming machine, the program product including machine instruction program code for:

(a) 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 gaming machine to display a base result representation in a first area of the display system comprising a matrix of symbol locations including a first line of symbols randomly selected from among multiplier symbols and non-operative symbols, a second line of symbols randomly selected from among multiplier symbols and non-operative symbols, and a third line of symbols randomly selected from among prize symbols and non-operative symbols, the prize symbols comprising multiple-location symbols spanning multiple adjacent symbol locations and single location symbols;

(b) in response to an alignment of a prize symbol with a first plurality of multiplier symbols along a single alignment path defined through the matrix, awarding a prize amount of a prize associated with the prize symbol times a combined multiplier value indicated by the multiplier symbols;

(c) in response to an alignment of a multiple-location prize symbol along multiple alignment paths defined through the matrix, each alignment path including a plurality of multiplier symbols, awarding a prize amount of a prize associated with the multiple-location prize symbol times a combined multiplier value calculated as a product of all the multiplier symbols aligned across the multiple alignment paths; and

(d) causing the display system to display a graphic sequence visually combining the plurality of multiplier symbols from the multiple alignment paths into a single larger multiplier symbol representing the combined multiplier value, thereby providing visual feedback to a player of the combined multiplier effect.

16. The medium holding a program product of claim 15 , wherein the first, second, and third lines of symbols are slot machine reels.

17. The medium holding a program product of claim 15 , wherein the program code is further executable for, in response to a trigger condition for the play input and under control of the processing system, causing the display system to display an operation of a prize selector to select a prize amount from among a plurality of available prize amounts and causing the display system to replace a symbol in the third line of symbols with a new prize symbol associated with the prize amount before awarding a prize.

18. The medium holding a program product of claim 17 , wherein the trigger condition is a designated symbol appearing in the third line of symbols.

19. The medium holding a program product of claim 18 , wherein the prize selector is a selector wheel positioned in a second display area of the display system.