Dice are objects used in games when something random needs to be done, such as moving a piece a random number of places on a board. Most dice are cubes that have the numbers 1, 2, 3, 4, 5 and 6 on the faces. Dice are sometimes made in other polyhedral shapes than cubes, but the six-sided die ("die" is the singular of "dice") is the most common. A die is usually rolled by the player’s hand. When adding together opposite sides of typical cubical dice, the sum is always 7.