Get in a "mental aerobics" workout every day and keep your brain fit while having fun! Both fun and challenging, these puzzle books will help to keep your mind stronger... longer. Each puzzle book contains Sudoku puzzles, cross-word puzzles, gridlock puzzles, and more. Ideal for school centers, waiting rooms, care centers, camp, hospitals, travel, and resale. Case includes 24 Kappa Variety Puzzles and Games™ puzzle books assorted between 2 different volumes (volumes may vary by case).