The History of Gaming Dice: From Knucklebones to the d20

Gaming dice are far older than you probably think. The oldest known dice are about 12,000 years old and come from western North America. Cubic dice with modern-style pips appear around 4,500 years ago in Mesopotamia and the Indus Valley. The d20 you roll for initiative is a 20th-century story: a Japanese randomizer, a wargaming scene and a small company that sold dice to Dungeons & Dragons players. Here is how a handful of sheep ankle bones became the pile of plastic, metal and resin gems on your table.

TL;DR

• A 2026 study reported the oldest known dice, roughly 12,000 years old, from western North America, pushing dice back about 6,000 years from the previous record.
• Six-sided dice with opposite faces adding up to seven show up in the Indus Valley and Mesopotamia in the second half of the third millennium BCE.
• Dice were used for games and for divination, often both at once.
• The first mass-produced d20 was a Japanese decimal randomizer from 1950 to 1951, not a fantasy prop. Wargamers then carried it into early D&D.
• Today’s dice come in metal, resin, wood, gemstone and liquid core, and you can browse all of them at D20 Collective.

Table of Contents

• The oldest dice we know of (and they are older than your hobby)
• Knucklebones, pyramids and the first cubes
• Dice for games, dice for gods
• How dice changed: materials, pips and standardization
• The d20 before Dungeons & Dragons
• How wargamers got their dice
• Dice today: from bone to liquid core
• Perspective
• Ready to add your chapter to the story?
• FAQ

The oldest dice we know of (and they are older than your hobby)

For a long time, the record belonged to Mesopotamia, with dice made around 5,500 years ago. Then a 2026 study by Robert J. Madden in American Antiquity reported dice roughly 12,000 years old from western North America. That moved the invention of dice back by about 6,000 years. So the next time someone says your Friday night hobby is a fad, you can point out that humans have been rolling things for longer than they have been farming.

The Old World has its own early finds. At Başur Höyük, an Early Bronze Age site in southeastern Turkey, archaeologists found gaming pieces radiocarbon dated to 3100 to 2900 B.C., including 49 small painted stones and dice. Think of it as the world’s oldest game bag, minus the snacks.

Knucklebones, pyramids and the first cubes

The very first dice were probably not cubes at all. Irving Finkel of the British Museum suggests that early dice almost certainly did not have six sides, and that knucklebones may have been tossed for simple yes or no answers before anyone numbered them. Knucklebones (astragali) are the ankle bones of sheep and goats. They land on four distinct sides, which makes them a very rustic d4.

Finkel also uncovered the rules of the Royal Game of Ur, a board game from the mid-third millennium BC that used a pyramid-shaped four-sided die. Yes, the d4 you step on in the dark has an ancient ancestor, and it has been hurting feet for a very long time.

Cubes followed. According to Yale Assyriologist William Hallo, the earliest cubic dice date to the second half of the third millennium B.C.E., from the Indus Valley culture in present-day Pakistan and from Mesopotamia, and some already had dots arranged in the modern way, with opposite sides adding up to seven. Bone dice from Skara Brae in Scotland and terracotta dice from Mohenjo-daro show up in the same broad window, according to Wikipedia’s overview of dice.

Why sevens? Finkel’s guess is that people may have felt this arrangement made dice seem fair, though there is no scientific reason it would. Humans love a tidy pattern, even when the math does not care.

Dice for games, dice for gods

Dice were never only about fun. In the ancient world the line between a game and a question for the gods was thin.

• Hellenistic Israel: At Maresha, more than 600 astragali were found, used in both gaming and divination. Some had been shaved down, perforated or filled with lead so they would throw better. That is roughly 2,300 years ago, and people were already tuning their dice. Min-maxing is ancient.
• Bronze and Iron Age Levant: Researchers studying finds from Mount Ebal note that some dice in cultic assemblages may have been used for divination, including a blue faience die from Tel Dan with pips from 1 to 6 and opposite faces summing to 7.
• Qin China: A tomb at Wangjiatai held twenty-three lacquered wooden dice next to a diviner’s board, and Mark Edward Lewis argues the dice were probably used to generate hexagrams.

So when your table argues over whether a roll was “fate” or “just bad luck,” you are carrying on a tradition with real depth. Ulrich Schädler, director of the Swiss Museum of Games, points out that we cannot know exactly which dice games came first unless the materials were carved in stone or bone. What we do know is that the early dice games were generally for two players. Two-player, no GM, no snacks policy. Brutal.

How dice changed: materials, pips and standardization

If you want hard data on how a cube evolved, look at the Netherlands. Eerkens and de Voogt analyzed 110 well-dated dice and found that dice from before 650 CE varied a lot in every attribute. Dice from 1100 to 1450 were highly standardized, and those after 1450 were standardized in some ways (symmetry, pip configuration) but not others (material).

Here is the short version of what they found:

The organic materials were mostly bone, antler and ivory, and the sample of 96 organic dice dominated every period, with only a few of stone, glass, metal and fired clay. Notice the swing from sevens to primes and back to sevens. Even dice have a fashion cycle. Pip style got simpler too, ending with plain dots.

Regional habits stuck around, too. Western dice are normally right-handed, while Chinese dice are normally left-handed, and Asian-style dice often show red pips on the one and four sides, according to Wikipedia’s entry on polyhedral dice. Next time you buy a set, flip a d6 and see which way the 1, 2 and 3 run around the corner.

By the 16th and 17th centuries the arrangement of numbers was standardized, and more than 60 gaming dice have turned up in the excavations of James Fort in Virginia, a reminder that colonists brought their bones and their bad luck with them.

The d20 before Dungeons & Dragons

Here is the surprise for D&D fans: the twenty-sided die is old. Twenty-sided dice date to the 2nd century CE, with some Ptolemaic Egyptian examples as early as the 2nd century BCE, though it is not known whether they were used as gaming dice. They may have been decorative, magical, or just very fancy paperweights. Nobody rolled a natural 20 on them and screamed, as far as we can tell.

The modern d20 has a more precise origin. The Japanese Standards Association developed the first mass-produced twenty-sided die in 1950 to 1951 as a random number device. The design is credited mainly to Ishida Yasushi, a Toshiba engineer, and the dice were advertised in 1952 as Ikosahedoron. The faces were numbered 0 to 9 twice, so they worked as decimal randomizers. Your most dramatic die began life as a statistics tool. Somewhere, a Toshiba engineer is very proud and very confused.

How wargamers got their dice

Gaming dice have a long military side career. As Jon Peterson explains in Playing at the World, dice had been central to gaming since Prussian wargamers of the early nineteenth century developed combat resolution tables. Wargamers wanted percentile odds, and a handful of d6 rolls only approximates those. A 0 to 9 icosahedron, rolled twice, gives you a clean 1 to 100.

By 1970, polyhedral dice had begun creeping into the wargaming community, and the d20 got an early mention in the Tractics rules published in 1971. The same history notes that Americans had to order these dice from Japan or Britain, which was slow and costly. That supply problem is part of why dice became their own little industry.

The Analog Game Studies paper adds two specifics: the Bristol Wargames Society percentile pairs were the first polyhedral dice sold specifically for wargaming, while the Creative Publications set was the first sold for use with Dungeons & Dragons. The modern tradition of polyhedral sets began around the end of the 1960s, and the standard set pairs the Platonic solids with 4, 6, 8, 12 and 20 faces with a 10-sided trapezohedron. That gives you the d4, d6, d8, d10, d12 and d20 we all know, plus a percentile d10 to make your d100.

If you are curious what each of those dice actually does at the table, we wrote a walkthrough on the function of each die in a Dungeons and Dragons set. And if the math is what hooks you, our post on dice probability and the odds behind every roll explains why a d20 feels so cruel.

Dice today: from bone to liquid core

For most of history dice were made from whatever material was handy. Bone, antler, ivory, clay, stone and a little metal. Today a tabletop player can choose almost any material imaginable, and the choice is half the fun. It is also why tabletop is booming. Even video game worlds turn into table games, and a modern board game revival such as Heroscape: Age of Annihilation shows how people keep reaching for physical games with real pieces.

Here is how the main dice families compare for a modern player:

We sell each of these, and the history above is part of why we love them. A bone-colored set nods to the knucklebone days: our Ancient Bone beige resin 7-piece set is a good example of a modern set with an old soul. If you prefer your dice to look like something unearthed from a tomb, there is also the Ancient Relic grey resin set.

Perspective

We think the most interesting thing about dice history is how little the core idea has changed. Somebody, somewhere, wanted a roll to feel meaningful, and they made an object that carried that feeling. A knucklebone, a Roman bone cube and a Japanese icosahedron all answer the same need.

That is why we care about how our dice look and feel. A die is not just a random number generator. It is the one prop that every player at the table touches, and a striking set of liquid core, gemstone, metal, resin or wood dice makes that moment better. We design for the roll, the sound and the little cheer when the d20 lands on top.

We also believe the hobby is bigger than the transaction. The best part of owning a set is the story it collects, and we like being part of a collective of players who share those stories. Dice have always been social objects, and we want to keep it that way.

Teresa

Ready to add your chapter to the story?

Dice have gone from sheep bones to precision-cut gemstone and liquid core, and your table deserves a set that feels like part of that history. We make 7-piece sets in liquid core, gemstone, metal, resin and wood, plus mystery bundles if you like surprises and custom Hex Chests and Spellbook Gaming Kits for storing it all. Every order is backed by our unconditional money-back policy.

Browse the full range in our dice collection, or go straight to something shiny in our liquid core dice. If you want a metallic option with a bit of ancient flavor, try the Elder Scroll antique bronze metal set.

New to all this? Our guide to beginner RPG dice covers what to buy for your first game, and our best dice for tabletop RPG campaigns guide goes deeper. Fancy a nostalgia trip? We also looked at whether an ideal dice set from 1992 still works for modern players.

FAQ

What are the oldest dice ever found?

A 2026 study by Robert J. Madden in American Antiquity reported dice roughly 12,000 years old from western North America. Before that, the oldest recorded dice were from Mesopotamia, made around 5,500 years ago. The new find pushes the invention of dice back by about 6,000 years.

Why do opposite faces on a d6 add up to seven?

Nobody knows for sure. Some of the earliest cubic dice from Mesopotamia and the Indus Valley already used this arrangement. Irving Finkel of the British Museum suggests people may have thought it made dice fair, although there is no scientific reason it would.

Who invented the d20?

Twenty-sided dice exist from ancient Egypt and Rome, but nobody knows if they were used for games. The first mass-produced d20 came from the Japanese Standards Association in 1950 to 1951, with the design credited mainly to Toshiba engineer Ishida Yasushi. Wargamers then adopted it for percentile rolls, and it moved into role-playing games from there.

Were ancient dice used for gambling or for magic?

Both. Finds at Maresha in Israel show knucklebones used in gaming and divination, and a Qin-dynasty tomb in China held dice alongside diviner’s tools. Researchers often cannot tell which purpose a given die served, and some probably did both.

When did polyhedral dice become part of tabletop RPGs?

The modern tradition of polyhedral sets began around the end of the 1960s among wargamers. The Creative Publications polyhedral set was the first sold for use with Dungeons & Dragons, and the dice have been used in role-playing games ever since.

Recommended

• Dice Probability: The Odds Behind Every Roll
• Beginner RPG Dice: What to Buy for Your First Game
• How Many Gaming Dice Does a DM Need?
• The Function of Each Die in Dungeons and Dragons Dice Set