A variety of themes such as: dolls, Egypt, autumn, watches, pinball and so many more. Hours of challenging puzzles for fun and relaxation. Keep the mind sharp and improve visual acuity. Performing puzzles is a great way to improve memory and relax the body and mind. One theme per puzzle and one puzzle per page (.85 x 11) inches. Puzzles are designed to improve cognitive ability. Makes a great gift for kids, teen, adults and seniors. All puzzle keys located inside as well. 100 pages.