Systems and methods for electronic gaming in which an active area alternates between sets of reels

1. An electronic gaming machine comprising:

a display;

a credit input mechanism including at least one of a card reader, a ticket reader, a bill validator, and a coin input mechanism; and

a game controller configured to execute instructions stored in a tangible, non-transitory, computer-readable storage medium, which, when executed by the game controller, cause the game controller to at least:

determine a number of free spins;

simulate spinning and stopping a first plurality of reels to display a first plurality of symbols from each reel of the first plurality of reels, wherein a second plurality of reels are held stationary while the first plurality of reels are spinning;

decrement the number of free spins by one free spin;

determine whether the first plurality of symbols include at least one first trigger symbol;

determine that at least one free spin of the number of free spins remains;

simulate spinning and stopping, in response to display of the at least one first trigger symbol and the determination that at least one free spin remains, the second plurality of reels to display a second plurality of symbols from each reel of the second plurality of reels, wherein the first plurality of reels are held stationary while the second plurality of reels are spinning;

decrement the number of free spins by one free spin;

determine whether the second plurality of symbols includes at least one second trigger symbol;

determine that at least one free spin of the number of free spins remains; and

simulate spinning and stopping the first plurality of reels after the first plurality of reels have been held stationary, in response to display of the at least one second trigger symbol and the determination that at least one free spins remains, wherein the second plurality of reels are held stationary while the first plurality of reels are spinning.

2. The electronic gaming machine of claim 1 , wherein the first plurality of reels include a plurality of simulated reels, and wherein the second plurality of reels include a plurality of simulated reels, and wherein the first plurality of reels are arranged one of i) above and ii) below the second plurality of reels.

3. The electronic gaming machine of claim 1 , wherein, when executed, the instructions further cause the game controller to at least:

determine a plurality of bingo game outcomes;

identify a number of winning bingo game outcomes from the plurality of bingo game outcomes; and

award the number of free spins to correspond to the number of winning bingo game outcomes, wherein each free spin of the number of free spins corresponds to a spin of one of i) the first plurality of reels and ii) the second plurality of reels.

4. The electronic gaming machine of claim 3 , wherein, when executed, the instructions further cause the game controller to at least:

associate, based upon a paytable, a credit value with each bingo game outcome of the plurality of bingo game outcomes, such that each bingo game outcome is associated with a respective credit value;

associate each bingo game outcome with one free spin of the number of free spins; and

simulate spinning and stopping one of i) the first plurality of reels and ii) the second plurality of reels based upon the credit value associated with each bingo game outcome, such that, when a credit value associated with a bingo game outcome is greater than a preceding credit value of a preceding bingo game outcome, the first plurality of reels are spun and stopped to award the credit value, and such that, when the credit value associated with the bingo game outcome is less than the preceding credit value of the preceding bingo game outcome, the second plurality of reels are spun and stopped to award the credit value.

5. The electronic gaming machine of claim 1 , wherein each spin of one of the first plurality of reels and the second plurality of reels corresponds to a respective winning outcome of a wagering game.

6. The electronic gaming machine of claim 1 , wherein display of the first trigger symbol on the first plurality of reels indicates a subsequent spin will be simulated on the second plurality of reels while the first plurality of reels are held stationary, and display of the second trigger symbol on the second plurality of reels indicates a subsequent spin will be simulated on the first plurality of reels while the second plurality of reels are held stationary.

7. The electronic gaming machine of claim 1 , wherein the first plurality of reels comprises a lower set of reels, the second plurality of reels comprises an upper set of reels, the at least one first trigger symbol comprises a bounce up symbol, and the at least one second trigger symbol comprises a bounce down symbol.

8. A method for presenting a wagering game on an electronic gaming machine, the electronic gaming machine comprising a display configured to present the wagering game, a player input interface, a game controller, and a credit input mechanism including at least one of a card reader, a ticket reader, a bill validator, and a coin input mechanism, the credit input mechanism configured to establish a credit balance that is increasable and decreasable based on wagering activity, the method comprising:

determining, by the game controller, a number of free spins;

simulating, by the game controller, spinning and stopping a first plurality of reels to display a first plurality of symbols from each reel of the first plurality of reels, wherein a second plurality of reels are held stationary while the first plurality of reels are spinning;

decrementing, by the game controller, the number of free spins by one free spin;

determining, by the game controller, whether the first plurality of symbols include at least one first trigger symbol;

determining, by the game controller, that at least one free spin of the number of free spins remains;

simulating, by the game controller, spinning and stopping, in response to display of the at least one first trigger symbol and the determination that at least one free spin remains, the second plurality of reels to display a second plurality of symbols from each reel of the second plurality of reels, wherein the first plurality of reels are held stationary while the second plurality of reels are spinning;

decrementing, by the game controller, the number of free spins by one free spin;

determining, by the game controller, whether the second plurality of symbols includes at least one second trigger symbol;

determining, by the game controller, that at least one free spin of the number of free spins remains; and

simulating, by the game controller, spinning and stopping the first plurality of reels after the first plurality of reels have been held stationary, in response to display of the at least one second trigger symbol and the determination that at least one free spins remains, wherein the second plurality of reels are held stationary while the first plurality of reels are spinning.

9. The method of claim 8 , wherein the first plurality of reels include a plurality of simulated reels, and wherein the second plurality of reels include a plurality of simulated reels, and wherein the first plurality of reels are arranged one of i) above and ii) below the second plurality of reels.

10. The method of claim 8 , further comprising:

determining, by the game controller, a plurality of bingo game outcomes;

identifying, by the game controller, a number of winning bingo game outcomes from the plurality of bingo game outcomes; and

awarding, by the game controller, the number of free spins to correspond to the number of winning bingo game outcomes, wherein each free spin of the number of free spins corresponds to a spin of one of i) the first plurality of reels and ii) the second plurality of reels.

11. The method of claim 10 , further comprising:

associating, by the game controller and based upon a paytable, a credit value with each bingo game outcome of the plurality of bingo game outcomes, such that each bingo game outcome is associated with a respective credit value;

associating, by the game controller, each bingo game outcome with one free spin of the number of free spins; and

simulating, by the game controller, spinning and stopping one of i) the first plurality of reels and ii) the second plurality of reels based upon the credit value associated with each bingo game outcome, such that, when a credit value associated with a bingo game outcome is greater than a preceding credit value of a preceding bingo game outcome, the first plurality of reels are spun and stopped to award the credit value, and such that, when the credit value associated with the bingo game outcome is less than the preceding credit value of the preceding bingo game outcome, the second plurality of reels are spun and stopped to award the credit value.

12. The method of claim 8 , wherein each spin of one of the first plurality of reels and the second plurality of reels corresponds to a respective winning outcome of a wagering game.

13. The method of claim 8 , wherein display of the first trigger symbol on the first plurality of reels indicates a subsequent spin will be simulated on the second plurality of reels while the first plurality of reels are held stationary, and display of the second trigger symbol on the second plurality of reels indicates a subsequent spin will be simulated on the first plurality of reels while the second plurality of reels are held stationary.

14. The method of claim 8 , wherein the first plurality of reels comprises a lower set of reels, the second plurality of reels comprises an upper set of reels, the at least one first trigger symbol comprises a bounce up symbol, and the at least one second trigger symbol comprises a bounce down symbol.

15. A computer-readable storage medium having computer-executable instructions embodied thereon, which when executed by a game controller of an electronic gaming machine, cause the game controller to at least:

determine a number of free spins;

simulate spinning and stopping a first plurality of reels to display a first plurality of symbols from each reel of the first plurality of reels, wherein a second plurality of reels are held stationary while the first plurality of reels are spinning;

decrement the number of free spins by one free spin;

determine whether the first plurality of symbols include at least one first trigger symbol;

determine that at least one free spin of the number of free spins remains;

simulate spinning and stopping, in response to display of the at least one first trigger symbol and the determination that at least one free spin remains, the second plurality of reels to display a second plurality of symbols from each reel of the second plurality of reels, wherein the first plurality of reels are held stationary while the second plurality of reels are spinning;

decrement the number of free spins by one free spin;

determine whether the second plurality of symbols includes at least one second trigger symbol;

determine that at least one free spin of the number of free spins remains; and

simulate spinning and stopping the first plurality of reels after the first plurality of reels have been held stationary, in response to display of the at least one second trigger symbol and the determination that at least one free spins remains, wherein the second plurality of reels are held stationary while the first plurality of reels are spinning.

16. The computer-readable storage medium of claim 15 , wherein the first plurality of reels include a plurality of simulated reels, and wherein the second plurality of reels include a plurality of simulated reels, and wherein the first plurality of reels are arranged one of i) above and ii) below the second plurality of reels.

17. The computer-readable storage medium of claim 15 , wherein, when executed, the instructions further cause the game controller to at least:

determine a plurality of bingo game outcomes;

identify a number of winning bingo game outcomes from the plurality of bingo game outcomes; and

award the number of free spins to correspond to the number of winning bingo game outcomes, wherein each free spin of the number of free spins corresponds to a spin of one of i) the first plurality of reels and ii) the second plurality of reels.

18. The computer-readable storage medium of claim 17 , wherein, when executed, the instructions further cause the game controller to at least:

associate, based upon a paytable, a credit value with each bingo game outcome of the plurality of bingo game outcomes, such that each bingo game outcome is associated with a respective credit value;

associate each bingo game outcome with one free spin of the number of free spins; and

simulate spinning and stopping one of i) the first plurality of reels and ii) the second plurality of reels based upon the credit value associated with each bingo game outcome, such that, when a credit value associated with a bingo game outcome is greater than a preceding credit value of a preceding bingo game outcome, the first plurality of reels are spun and stopped to award the credit value, and such that, when the credit value associated with the bingo game outcome is less than the preceding credit value of the preceding bingo game outcome, the second plurality of reels are spun and stopped to award the credit value.

19. The computer-readable storage medium of claim 15 , wherein display of the first trigger symbol on the first plurality of reels indicates a subsequent spin will be simulated on the second plurality of reels while the first plurality of reels are held stationary, and display of the second trigger symbol on the second plurality of reels indicates a subsequent spin will be simulated on the first plurality of reels while the second plurality of reels are held stationary.

20. The computer-readable storage medium of claim 15 , wherein the first plurality of reels comprises a lower set of reels, the second plurality of reels comprises an upper set of reels, the at least one first trigger symbol comprises a bounce up symbol, and the at least one second trigger symbol comprises a bounce down symbol.