Divide your learners into pairs. Ask them to take three minutes to interview each other. Each interviewer has to find 3 interesting facts about their partner. Bring everyone back to together and ask everyone to present the 3 facts about their partner to the rest of the group. Watch the time on this one, keep it moving along.
Each person takes a turn to ask questions and figure out who they are. For example, Am I alive? Am I female? Am I in a band? Only yes or no questions can be asked. If the answer is no, their turn is over. If the answer is yes, they can ask another question and keep going until they get a no, or guess who they are. Keep playing until everyone has guessed, or if time is short, stop after the first few correct answers.