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A cube marked 2, 4, 8, 16, 32 and 64, used to raise the stake in backgammon.
Also known as: Backgammon cube, Stake cube
Sometimes confused with: Doubling die
The doubling cube is a six-sided block marked 2, 4, 8, 16, 32 and 64, and it is not a die: it is never rolled. It records the current stake. A player who believes they are ahead may offer to double before rolling; the opponent either accepts, turning the cube to the next number and taking ownership of it, or resigns the game at the current value. Its numbers are powers of two because each offer doubles what has gone before.
A cube with a numeral printed on each of its six square faces, the numbers doubling from one face to the next.
One is a stake marker that is never rolled; the other is an ordinary die.