For children ages 6 to 8, there are puzzles with 25 to 100 pieces, ideal for beginners. For slightly older children between the ages of 9 and 12, there are puzzles with 100 to 300 pieces. Teens between the ages of 13 and 16 can challenge themselves with puzzles ranging from 300 to 500 pieces. And for adults aged 17 to 99, there are puzzles with 500+ pieces for hours of puzzle fun. These are standard jigsaw puzzles. 3D puzzles and puzzles with special shapes offer a different challenge, so the recommended age range may vary.