Polyhedral dice are multi-sided dice commonly used in tabletop games like Dungeons & Dragons. Unlike standard six-sided dice, polyhedral dice can have various shapes, including four-sided (d4), six-sided (d6), eight-sided (d8), ten-sided (d10), twelve-sided (d12), and twenty-sided (d20). Each type of die serves different purposes in gameplay, such as determining outcomes of actions or resolving combat. These dice are often made from materials like plastic or resin and come in various colors and designs. Players typically roll these dice to generate random numbers, which can influence the game's narrative and mechanics. The variety of shapes allows for a wide range of possibilities in gameplay.