One player is "it" and leaves the group while the other players choose an object in the room. "It" returns and tries to guess the object. He can ask 20 questions of the group members, all of which must be answered by yes or no. He asks his questions of each person in turn so that all are asked at least one question. If "it" guesses the object, someone else becomes "it"; otherwise he is "it" again for the next game.