Gaming system and method of gaming

1. A computer-implemented method of conducting a shared game event including two or more participating gaming devices, the method comprising:

selecting, based on an eligibility criterion, symbols resulting from play of the shared game event; wherein the eligibility criterion comprises at least one of a designated turnover or a placement of an additional bet;

storing the selected symbols in a symbol store arranged to store a plurality of symbols, the symbol store arranged such that once a maximum number of symbols is reached, storage of a further symbol in the symbol store results in the removal of a stored symbol from the symbol store in accordance with a removal rule; and

determining whether the stored symbols meet an award criterion.

2. A method as claimed in claim 1 , wherein the symbol store is a First-In-First-Out (FIFO) symbol stack and the removal rule is that the first symbol added to the symbol stack is the first removed.

3. A method of gaming as claimed in claim 1 , wherein the symbols are selected at random from at least one of a base game and feature game.

4. A method of gaming as claimed in claim 3 , wherein at least one symbol is selected from each game of the base game and/or feature game.

5. A method of gaming as claimed in claim 3 , wherein the symbols are stored in the same order as which they are selected.

6. A method of gaming as claimed in claim 1 , wherein the award criterion is that a particular combination of symbols appears in the symbol store.

7. A method of gaming as claimed in claim 1 , wherein bonus credits and/or additional games are awarded responsive to the award criterion being met.

8. A method of gaming as claimed in claim 1 , further comprising waiting until the maximum number of symbols has been reached before determining whether the award criterion has been met.

9. A method of gaming as claimed in claim 2 , further comprising displaying the symbol store in association with the base game and/or feature game.

10. A method of gaming as claimed in claim 1 , wherein the symbols are selected from a plurality of symbols utilised in the game event for evaluating a winning outcome.

11. A controller for a gaming system including two or more participating gaming devices operable to participate in a shared game event, the controller comprising:

a symbol store arranged to store a plurality of symbols, the symbol store arranged such that once a maximum number of symbols is reached, storage of a further symbol results in a removal of a storage symbol in accordance with the removable symbol;

a symbol selector module arranged to select symbols resulting from play of the shared game event and to store the selected symbols in the symbol store, the symbol selector module activated to select symbols based on an eligibility criterion, wherein the eligibility criterion comprises at least one of a designated turnover or a placement of an additional bet; and

a determination module arranged to determine whether the stored symbols meet an award criterion.

12. A game controller as claimed in claim 11 , wherein the symbol store is a First-In-First-Out (FIFO) symbol stack and the removal rule is that the first symbol added to the symbol stack is the first removed.

13. A game controller as claimed in claim 11 , wherein the symbols are selected at random from at least one of a base game and feature game.

14. A game controller as claimed in claim 13 , wherein at least one symbol is selected from each game of the base game and/or feature game.

15. A game controller as claimed in claim 11 , further comprising an award module arranged to award a prize when the award criterion has been met.

16. A game controller as claimed in claim 11 , wherein the award module is arranged to award bonus credits and/or additional games responsive to the award criterion being met.

17. A game controller as claimed in claim 11 , wherein the award criterion is that a particular combination of symbols appears in the symbol store.

18. A game controller as claimed in claim 11 , wherein the determination module is arranged to wait until the maximum number of symbols has been reached before making the determination.

19. A game controller as claimed in claim 13 , further comprising a display module arranged to display the symbol store in association with the base game and/or feature game.

20. A game controller as claimed in claim 11 , wherein the game controller is constituted by a processor executing program code stored in a memory.

21. A controller in accordance with claim 11 , wherein the shared game event comprises displaying a separate game on a display of each of the participating gaming devices and wherein the symbols are selected from the separate games.

22. A controller in accordance with claim 11 , wherein the gaming system is arranged to conduct the shared game event in response to a trigger event occurring in relation to play of a game on one of the gaming devices.

23. A controller in accordance with claim 11 , wherein the award criterion is that a particular symbol combination appears in the symbol store.

24. A controller in accordance with claim 11 , further comprising an award module arranged to award a prize to at least one of the plurality of gaming devices in the gaming system when the award criterion has been met, according to a distribution rule.

25. A tangible computer readable storage medium including computer program code which when executed by a processor implements a method of conducting a shared game event including two or more participating gaming devices, the method comprising:

selecting, based on an eligibility criterion, symbols appearing in a game event wherein the eligibility criterion comprises at least one of a designated turnover or a placement of an additional bet;

storing selected symbols appearing in a game event in a symbol store arranged to store a plurality of symbols, the symbol store arranged such that, once a maximum number of symbols is reached, storage of a further symbol in the symbol store results in the removal of a stored symbol from the symbol store in accordance with a removal rule; and

determining whether the stored symbols meet an award criterion.