FOXMIND GAMES: BY THE BOOK - A Novel Stacking Puzzle - 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. Challange yourself and play solo or get soem help from a friend. How to play: 1) Pick a puzzle card. 2) Place the pieces with the clues on the card. 3) Flip the card over to see the solution. Overview: Logical Thinking, Math, Observation, Dexterity. Ages 8+. 1+ Players, 10 Minute Playing Time. 40 Puzzles.