Dice Randomness Testing

Today Awesome Dice released the results of an exhaustive 10,000 roll test of Chessex and GameScience dice to see how randomly D&D dice really roll:

The founder of GameScience, Lou Zocchi, has long claimed that GameScience dice roll more true than other gaming dice. In a well-known GenCon video Zocchi explained why GameScience dice should roll more true.

His logic is that due to how dice are made, traditional RPG dice are actually put through a process similar to a rock tumbler as part of the painting and polishing, and this process  causes the dice to have rounded edges. In theory the uneven rounding gives the dice an inconsistent shape that favors certain sides. GameScience dice are not put through this process, which is why they retain their sharp edges and is also why their dice come uninked.

While Zocchi’s makes a good argument about egg-shaped d20s, what was lacking was any kind of actual testing of how the dice roll. Nowhere were we able to find any tests of d20s — either GameScience or traditional d20s — to determine whether or not they roll true. As giant fans of dice and an impartial third party, we decided to run a test ourselves and see just how randomly RPG d20s really roll.

We pitted GameScience precision dice against Chessex dice (the largest RPG dice manufacturer) to see what science has to say.

d20 dice randomness test results

See Full Post.