Spinning reel game with a synchronized spinning prize reel

1. A gaming machine comprising:

one or more display devices displaying a prize reel that spins in a first direction and index reels that each spin in a second direction that crosses the first direction; and

a game controller executing instructions stored in a memory, wherein execution of the instructions causes the game controller to at least:

spin each index reel;

while a series of spins has at least one remaining spin, respin each index reel that does not present at one instance of an index symbol and hold in place each index reel that presents at least one instance of the index symbol;

after completing the series of spins, spin the prize reel to present prizes at a plurality of prize positions, wherein each prize position aligns with a corresponding index reel of the index reels; and

display an award via the one or more display devices, wherein the award is based on the prizes presented by the prize reel and whether their corresponding index reels present at least one instance of the index symbol.

2. The gaming machine of claim 1 , wherein executing the instructions further causes the game controller to:

provide the series of spins with an initial quantity of spins; and

reset a quantity of remaining spins for the series of spins to the initial quantity of spins each time at least one respun index reel presents at least one instance of the index symbol.

3. The gaming machine of claim 1 , wherein executing the instructions further causes the game controller to present a jackpot prize, via the one or more display devices, in response to each index reel presenting at least one instance of the index symbol.

4. The gaming machine of claim 1 , wherein executing the instructions further causes the game controller to determine the award based on a sum of each prize presented by the prize reel in which its corresponding index reel presents at least one instance of the index symbol.

5. The gaming machine of claim 1 , wherein executing the instructions further causes the game controller to set the award to a highest prize value of the prizes presented by the prize reel in which their corresponding index reel present at least one instance of the index symbol.

6. The gaming machine of claim 1 , wherein executing the instructions further causes the game controller to include in the award each prize presented by the prize reel in which its corresponding index reel presents at least one instance of the index symbol.

7. The gaming machine of claim 1 , wherein the prize reel comprises a mechanical reel.

8. The gaming machine of claim 1 , wherein the index reels comprise mechanical reels.

9. The gaming machine of claim 1 , wherein:

a first prize position and a last prize position are treated as contiguous; and

a quantity of the prizes on the prize reel equals to a quantity of the plurality of prize positions.

10. The gaming machine of claim 1 , wherein executing the instructions further causes the game controller to increment a defined one of the prizes of the prize reel in response to each occurrence of a game event.

11. The gaming machine of claim 1 , wherein the prize reel spin horizontally and each of the index reels spin vertically.

12. A method of a gaming machine, the method comprising:

spinning, via a game controller of the gaming machine, index reels of the gaming machine in a first direction;

while a series of spins has at least one remaining spin:

respinning, via the game controller, each index reel that does not present at one instance of an index symbol; and

holding in place each index reel that presents at least one instance of the index symbol;

after completing the series of spins, spinning, via the game controller, a prize reel in a second direction that crosses the first direction, wherein the prize reel presents prizes at a plurality of prize positions that each align with a corresponding index reel of the index reels; and

displaying an award, via one or more display devices of the gaming machine, wherein the award is based on the prizes presented by the prize reel and whether their corresponding index reels present at least one instance of the index symbol.

13. The method of claim 12 , further comprising:

awarding, with the game controller, an initial quantity of spins to the series of spins; and

resetting, with the game controller, a quantity of remaining spins for the series of spins to the initial quantity of spins each time at least one respun index reel presents at least one instance of the index symbol.

14. The method of claim 12 , further comprising presenting a special prize, via the one or more display devices, in response to each index reel presenting at least one instance of the index symbol.

15. The method of claim 12 , further comprising determining the award based on a sum of each prize presented by the prize reel in which its corresponding index reel presents at least one instance of the index symbol.

16. The method of claim 12 , further comprising incrementing, with the game controller, a defined one of the prizes of the prize reel in response to each occurrence of a game event.

17. The method of claim 12 , further comprising adding to the award each prize presented by the prize reel in which its corresponding index reel presents at least one instance of the index symbol.

18. A non-transitory computer readable storage medium comprising instructions that, in response to being executed, cause a gaming machine to:

spin index reels of the gaming machine in a first direction;

while a series of spins has at least one remaining spin:

respin each index reel that does not present at one instance of an index symbol; and

hold in place each index reel that presents at least one instance of the index symbol;

after completing the series of spins, spin a prize reel in a second direction that crosses the first direction, wherein the prize reel presents prizes at a plurality of prize positions that each align with a corresponding index reel of the index reels; and

display an award, via one or more display devices, wherein the award is based on the prizes presented by the prize reel and whether their corresponding index reels present at least one instance of the index symbol.

19. The non-transitory computer readable storage medium of claim 18 , wherein the instructions, in response to being executed, cause the gaming machine to:

award an initial quantity of spins to the series of spins; and

reset a quantity of remaining spins for the series of spins to the initial quantity of spins each time at least one respun index reel presents at least one instance of the index symbol.

20. The non-transitory computer readable storage medium of claim 18 , wherein the instructions, in response to being executed, cause the gaming machine to present a special prize, via the one or more display devices, in response to each index reel presenting at least one instance of the index symbol.