Dice is as old as the World 🎲🎲

The dice of the twenty-first century are completely different from their ancient ancestors.
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Once these were animal joints, sometimes tetrahedral cubes, and in some places nuts.
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However, time “honed” the dice, they became hexagonal cubes with slightly rounded corners and the sum of points of opposite sides equal to seven.

You can find this slot machine at http://artforgame.com/las-vegas/⁠