Gaming device with wheels for awarding composite features

1. An electronic gaming machine comprising:

a display device;

a random number generator;

a processor; and

a memory that stores:

a set of weighted tables that define trigger probabilities for different feature events in compliance with at least one target return to player (RTP); and

instructions that, when executed by the processor, cause the processor to, in response to a feature wheel initiation condition being met:

select, based at least in part on one or more random numbers dynamically generated by the random number generator, one or more scatter symbols to land on one or more spinning reels during a spinning reel event;

select, based at least in part on the one or more scatter symbols, a weighted table from the weighted tables;

select, based at least in part on the weighted table, stopping positions for a plurality of feature wheels associated with the different feature events corresponding to the spinning reels;

control the display device to display spinning of the plurality of feature wheels to land at the stopping positions;

determine a plurality of outcomes that correspond to the stopping positions;

initiate, based at least in part on the outcomes, a composite feature event that concurrently animates, on the display device, special effects characteristic of a plurality of the different feature events.

2. The electronic gaming machine of claim 1 , wherein the memory stores reel data defining a plurality of reel strips and a plurality of scatter symbols including at least one wheel scatter symbol, and wherein instructions, when executed, further cause the processor to:

select, in a spinning reel event, a plurality of symbols based on the reel data;

control the display device to display the plurality of symbols selected at a plurality of columns of symbol positions, each column corresponding to a reel strip; and

determine that the feature wheel initiation condition is met upon a trigger condition being met by accessing a weighted table in the memory to determine the at least one wheel scatter symbol is included in the plurality of symbols selected.

3. The electronic gaming machine of claim 2 , wherein the weighted table is based on data defining a relative probability of the trigger condition being met.

4. The electronic gaming machine of claim 2 , wherein the reel data defines at least one dynamic symbol position among the plurality of reel strips, and the reel data comprises the weighted table defining relative probabilities of a plurality of scatter symbols including the wheel scatter symbol being selected for the at least one dynamic symbol position, and wherein when the instructions are executed they cause the processor to configure the reel strips prior to selecting the symbols by randomly selecting a scatter symbol of the plurality of scatter symbols for each dynamic symbol position based on the one or more random numbers dynamically generated by the random number generator.

5. The electronic gaming machine of claim 2 , wherein selecting the plurality of symbols occurs during a feature event.

6. The electronic gaming machine of claim 1 , wherein when the instructions are executed they cause the processor to control the display to display columns of symbol positions in a first display area and the feature wheels in a second display area.

7. The electronic gaming machine of claim 6 , wherein the second display area is above the first display area.

8. The electronic gaming machine of claim 6 , wherein when the instructions are executed they cause the processor to conduct any feature event in the first display area.

9. The electronic gaming machine of claim 1 , wherein the feature wheel initiation condition comprises a collection of a defined set of symbols over a plurality of event instances.

10. The electronic gaming machine of claim 9 , wherein the plurality of event instances are part of a symbol collection feature initiated by the processor in response to a symbol collection feature condition being met.

11. The electronic gaming machine of claim 1 , wherein, the electronic gaming machine is configured to trigger at least one alternative feature event to the feature events associated with each of the feature wheels in response to a determining that an alternative trigger condition is met.

12. A non-transitory computer readable medium for conducting a feature event on a system including a display device, a controller, and one or more sequences of instructions that, when executed, cause the controller to:

select, based at least in part on one or more random numbers dynamically generated by a random number generator, one or more scatter symbols to land on one or more spinning reels during a spinning reel event;

select, based at least in part on the one or more scatter symbols, a weighted table from a set of weighted tables that are stored in memory and define trigger probabilities for different feature events in compliance with at least one target return to player (RTP);

select, based at least in part on the weighted table, stopping positions for a plurality of feature wheels associated with the different feature events corresponding to the spinning reels;

control the display device to display, via a graphical user interface, spinning of the plurality of feature wheels to land at the selected stopping positions;

determine, based on the selected stopping positions, whether to display an outcome from each wheel on the graphical user interface; and

initiate, based at least in part on the outcomes, a composite feature event that concurrently animates, on the display device, special effects characteristic of a plurality of the different feature events.

13. The non-transitory computer readable medium of claim 12 , wherein the one or more sequences of instructions, when executed, further cause the controller to:

select, in a spinning reel based on the one or more random numbers, a plurality of symbols based on reel data, wherein the reel data defines a plurality of reel strips and a plurality of scatter symbols including at least one wheel scatter symbol;

control the display device to display the plurality of symbols selected at a plurality of columns of symbol positions, each column corresponding to a reel strip from the plurality of reel strips; and

determine that a feature wheel initiation condition is met upon a trigger condition being met by a wheel scatter symbol being included in the plurality of symbols selected.

14. An electronic gaming system comprising:

at least one display device;

a random number generator;

one or more processors; and

at least one memory that stores:

a set of weighted tables that define trigger probabilities for different feature events in compliance with at least one target return to player (RTP); and

instructions that, when executed by the one or more processors, cause the one or more processors to, in response to a feature wheel initiation condition being met:

select, based at least in part on one or more random numbers dynamically generated by the random number generator, one or more scatter symbols to land on one or more spinning reels during a spinning reel event;

select, based at least in part on the one or more scatter symbols, a weighted table from the weighted tables;

select, based at least in part on the weighted table, stopping positions for a plurality of feature wheels associated with the different feature events corresponding to the spinning reels;

control the display device to display spinning of the plurality of feature wheels to land at the selected stopping positions;

determine a plurality of outcomes that correspond to the stopping positions; and

initiate, based at least in part on the outcomes, a composite feature event comprising:

enhanced and unenhanced characteristics of each of the different feature events; and

visual effects representing a combination of the enhanced and unenhanced characteristics of each of the different feature events on a graphical user interface.

15. The electronic gaming system of claim 14 , wherein the memory stores reel data defining a plurality of reel strips and a plurality of scatter symbols including at least one wheel scatter symbol, and wherein the instructions, when executed by the one or more processors, further cause the one or more processors to:

select, in the spinning reel, a plurality of symbols based on the reel data and the one or more random numbers;

control the display device to display the plurality of symbols selected at a plurality of columns of symbol positions, each column corresponding to a reel strip; and

determine that a feature wheel initiation condition is met upon a trigger condition being met by a wheel scatter symbol being included in the plurality of symbols selected.

16. The electronic gaming system as claimed in claim 15 , wherein the reel data defines at least one dynamic symbol position among the plurality of reel strips, and the reel data comprises a weight table defining relative probabilities of a plurality of scatter symbols including the wheel scatter symbol being selected for the at least one dynamic symbol position, and wherein the instructions, when executed by the one or more processors, further cause the one or more processors to configure the reel strips prior to selecting the symbols by randomly selecting a scatter symbol of the plurality of scatter symbols for each dynamic symbol position based on random numbers dynamically generated by the random number generator.

17. The electronic gaming system as claimed in claim 15 , wherein selecting the plurality of symbols based on the reel data occurs during a feature event.

18. The electronic gaming system as claimed in claim 14 , wherein the instructions, when executed by the one or more processors, further cause the one or more processors to respond to selection of a wheel scatter by randomly determining whether a trigger condition is met based on dynamically generated numbers from the random number generator.

19. The electronic gaming system as claimed in claim 18 , wherein the random determination is based on data defining a relative probability of the trigger condition being met.

20. The electronic gaming system as claimed in claim 14 , wherein the instructions, when executed by the one or more processors, further cause the one or more processors to trigger at least one alternative feature event to the feature events associated with the plurality of feature wheels in response to determining that an alternative trigger condition is met.