The True Genius line brings together brainteaser puzzles and links each design with an ancient civilization including China, Aztec, Rome, Greece and Egypt. The Puzzles are finished in an antique style to look as though they might actually be artifacts from long ago. The True Genius line offers a wide variety of price points, difficulty levels and solve types - filling in the gaps of any store's puzzle section or standing alone as a comprehensive collection of brainteasers. Thor's famed hammer Mjolnir is known for the strength required to weild it, but it will take real strength of mind to disassemble and reassemble this Norse-themed brainteaser. Are you worthy? The True Genius line brings together brainteaser puzzles and links each design with an ancient civilization. The puzzles are finished in an antique style to look as though they might actually be artifacts from long ago. The True Genius line offers a wide variety of price points, difficulty levels and solve types. Thor’s famed hammer Mjolnir is known for the strength required to wield it, but it will take real strength of mind to disassemble and reassemble this Norse-themed brainteaser. Are you worthy?. Recommended Ages: 14 Years And Up Measurements: 8.5 Length/Inches Base Material: 100% Wood Care: Wipe Clean Country of Origin: Imported p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 15.0px Calibri; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} WARNING: CHOKING HAZARD – small parts. Not for children under 3 years.