Mystery Board Game The Secret Door by Family Pastimes - Award Winning Players work together to figure out the mystery that lies behind the Secret Door Because of the cooperative principle, everyone is part of a team that discusses ideas and shares strategies Parent's Choice Toy Award Winner For 1 to 8 players ages 5 through 7 years Hand-made in Canada using recycled boards and papers, soy-based inks, water based glues and safe paints