Gift Cards


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Recommended for ages 14+ years

Everything adds up to 42!

In the summer of 1901, a mysterious contraption was discovered deep underwater in a shipwreck off Point Glyphadia, on the Greek island of Antikythera. Since its discovery, the “Antikythera mechanism” has often been referred to as the world’s first known analogue computer. Using technology that was lost to antiquity until the 14th century, this baffling mechanism was allegedly used to predict astronomical positions and eclipses, as well as the 4-year cycle of the Olympic games.

Inspired by the unparalleled true genius of ancient Grecian astronomers, the Grecian Computer puzzle from Project Genius® challenges you to turn the dials until all 12 columns add up to 42.


  • Experience the wonders of ancient intellect first-hand with the Grecian Computer brainteaser puzzle.
  • Turn the dials to make each column add up to 42. Getting one column is going to be easy. But when you realize turning any dial changes all the columns... It'll be hard not to break a sweat!
  • This high-quality brainteaser puzzle is the perfect gift for history buffs, game collectors and brainy people in your life. They can play, then display.
  • Difficulty level: 5/5 (very hard)
  • Puzzle measures 7 x 7 x 3 inches (LxWxH).
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