What is d4 dice?

D4 dice, also known as four-sided dice, are polyhedral dice with four faces, each numbered with the numbers 1 through 4. They are typically in the shape of a regular tetrahedron, with triangular faces meeting at a point. D4 dice are commonly used in tabletop role-playing games to determine random outcomes or for random number generation in other gaming contexts. They are often used to simulate low probability events or smaller ranges of numbers compared to dice with more faces.