By the Book is a novel stacking puzzle where you must put together a perfectly balanced bookshelf for our furry friend using a good dose of reasoning and sharp visual perception. 40 gradually progressing challenges using up to 12 different books will keep you on your toes.The objective is to arrange wooden books on the bookshelf in a way that achieves equilibrium, requiring players to carefully consider weight distribution, shape, and size. The varying levels of difficulty allow players to start with simpler challenges and gradually advance to more complex ones as they hone their skills, ensuring a satisfying and evolving experience. Challenge yourself independently or gather friends for a delightful group activity.Contents include: 40 Challenge Cards, 12 Books, 2 Shelves, 1 Cat, 1 LevelerFor 1 or more playersAges 8 and upMade in ChinaBrand new condition in original packagingWipe clean with dry or damp clothWarning: Choking Hazard - Contains small parts not suitable for children under 3 years.