OBJECT. Guess your opponent's Mystery. Person before your opponent guesses yours. CONTENTS. 2 Plastic Gameboards, 48 Plastic. Frames, 48 Face Cards. There's a mystery person on your opponent's card. Can you find the matching face in the crowd? Buy it here. Close the doors on the characters you rule out · Set up and play in seconds. Ages 4 and up. For 2 players. Adult assembly required. Guess Who? and all related.