Dice go way back. Some of these appear to meet today's standards for precision and fairness (all dice should have opposite sides add up to 1+sides. The d6's sides add to 7). The Greek stone d20 may be 2200 years old.
A Brief History of Dice | Libris Arcana
Not to admit my ignorance here, or maybe to do just that, but until recently I thought the D20 had probably been invented by Gygax and company at TSR. I mean maybe it had been around before then and used by the wargamer community, but it was definitely an invention of the mid-20th century, right? Oh how wrong I was!



