BRAIN-TWISTING ORIGAMI PUZZLES Foldology has 100 puzzles, 5 difficulty levels, and 50 hours of fun. Enjoy the beautiful designs and high-quality printing made in the USA as you uncover the mysteries of these puzzles. Makes a great gift for family and friends. SMALL TRAVEL-FRIENDLY It comes in a convenient, portable size 5x5 inches that fits into any bag, and you don't need a surface to fold on. Just take it with you on your commute or your next trip for some quality puzzling time. FOR AGES 10 UP No previous origamipuzzle experience required. Adults, teenagers, and pre-teens will love this single-player, hands-on game. Share some of the puzzles and challenge your friends. COGNITIVE BRAIN-TRAINING GAME These brain teasers train visual-spatial ability, critical-thinking, and logical reasoning skills. Kids will put away their screens as they get engrossed in this educational game. EASY TO START, BUT CHALLENGING TO MASTER The increasing difficulty presents new and exciting challenges. After you solve the easy ones, you'll get to incredibly complex puzzles that will amaze with their elegance. The final level will pose a great challenge not everyone will know the satisfaction of solving all of them.