15. The non-transitory tangible storage medium of claim 14 , wherein the social interaction includes an assignment to find a certain number of different character types of the participants at the real-world gathering.
15. The non-transitory tangible storage medium of claim 14 , wherein the social interaction includes an assignment to find a certain number of different character types of the participants at the real-world gathering. 16. The non-transitory tangible storage medium of claim 15 , wherein a reward for those participants physically participating in the social interaction includes a power up buff in the online game.