Watch out! The cookie monsters have stolen ten cookie jars from your neighborhood and are on the loose! Can you solve their monstrous riddles and earn the cookie jars back? Working together or by themselves, children ages five and up solve various riddles to open the cookie jars. The six different types of visual puzzles, which are shown on 36 illustrated, large-format cards, are combined in new ways each round. Use the simple decoder wheel to determine if your solution is correct. What are you waiting for? Get going to Monsterville!