100 EXTRAORDINARY OPTICAL ILLUSIONS. A fun and unique way to enjoy the world’s most fascinating and brain bending visual tricks.

POCKET-SIZED AND PACKED WITH FUN. Check out the clue and open the four doors to unveil an optical illusion. Guess the answer and then slide to reveal the answer.

PERFECT GIFT OR STOCKING STUFFER for anyone inquisitive. Play alone or with friends and family (age 8 plus).

HANDY TRAVEL ACTIVITY. Fits neatly into your pocket or bag. Hours of screen-free entertainment - play in the back of the car, in restaurants, planes and trains.