A wagering game system and its operations are described herein. In embodiments, the operations can include monitoring wagering game play for a player account that is registered to play a group scavenger hunt game. The group scavenger hunt game may include various collectable items that group members collect to win the group scavenger hunt game. The operations can further include determining that wagering game events occur during the wagering game play, where the occurrences of the wagering game events are prerequisites for obtaining the collectable items. The operations can further include indicating on a group progress report (e.g., a website) that one of the collectable items was obtained. In some embodiments, the operations can also include awarding the player account for obtaining the item, providing trophies, or other virtual assets, for winning the group scavenger hunt game, providing benefits for holding the trophies, etc.