Fiendish Japanese Pocket Puzzle - Vortex (Level 5) Cast Puzzle is a simple puzzle to take apart and put together.However the structure is amazingly deep and skilled.Difficult yet fun. Ideas from world-wide puzzle designers transcends language, culture, area, and era. These puzzles also stimulate intellectual curiosity for people all over the world. Enjoy the excitement and impact with family when you solve the puzzle. Attractive design to make you busy and involved. Exclusive licensed product sold by Hamee.