The Grin Studios Brain Teasers Surprise Mystery Box is a party game accessory that offers 10 fun surprises each for kids aged 5 and above. Surprise Bonus 1 in 20 boxes! Designed by Grin Studios, this mystery-themed game is perfect for both boys and girls. With a focus on providing entertainment and excitement, this game is sure to be a hit at any birthday party or gathering. Each surprise is tailored to create a fun and engaging experience for children, making it a great addition to any game collection.