Patent ID: 8764537

Claim:
A wagering game terminal, comprising: a wager input device for receiving wager inputs at said wagering game terminal, said wagers applied to a wagering game in which outcomes are randomly selected from a plurality of outcomes; and a display for displaying symbols indicative of each randomly selected outcome, said symbols including different special event symbols that are added to a special event collection associated with a player in response to said special event symbols being displayed on said display in a predetermined manner, said special event collection triggering a special event on said wagering game terminal when complete, wherein said special event collection is complete when a predetermined combination of said different special event symbols have been added to said special event collection; wherein said wagering game terminal is configured to store said special event symbols that have been added to said special event collection upon conclusion of a current gaming session associated with the player and to restore said previously stored special event symbols to said special event collection in a subsequent gaming session associated with the player.