As a change from running a Treasure Hunt - here is a great party game for adults or grown-ups. Follow the links for other party games to entertain your guests - whatever their age:
Prior to your party, prepare two piles of cards: one of female celebrities, one of male celebrities. These can be real or fictional, living or dead.
At the start of the game, pin a card to the back of each guest. Male celebrities, for the men, and female celebrities for the women. The guests should not see their card.
The players must wander about and ask each other questions about who they are. The object of the game is to discover who they are. They can ask only 3 questions of each other person, and the question can only be answered yes or no.
As soon as the player guesses who they are, they must go to the hostess and tell her. If correct, she will take the card off the player’s back and pin it to their front. Another card is pinned to their back.
After a pre determined length of time (perhaps half an hour), or until the cards run out, the hostess calls halt. Then the player with the most cards pinned to their front is the winner.