Hanayama cast puzzles are the world's finest brain teasers. These high-quality, cast metal puzzles come in six challenging, Mensa-rated levels of difficulty. Inventors from around the globe compete to have their designs included in the line. These beautifully shaped and high quality puzzles are a perfect gift or something to keep busy with. Even the level one challenge is fun and challenging! Hanayama puzzles are recommended for ages 12 and up. Once you pick them up, you will quickly gain an appreciation of the challenges that lie ahead!