The purpose of a die is to generate a random number with equal distribution. So why are you using dice that don’t do this? A great many dice out there are deformed, improperly weighted, or unevenly rounded. These defects prevent those dice from rolling true. Game Science dice present each face with uniform frequency.
Game Science produces precision dice that do what dice are supposed to do. Colonel Louis Zocchi, founder of Game Science, explains exactly why his dice are the best on the market in these two You Tube videos:
First off, Game Science dice are uniform in size and weight. If you make a number of stacks of ten Game Science 20-sided dice, each stack will be uniform in height. If you do the same with other manufacturer’s dice, the stacks may vary in height considerably.
Secondly, the edges on Game Science dice are crisp and sharp. This allows them to roll properly. Other manufacturers tumble their dice to clean off manufacturing marks and to polish their dice. This knocks down the edges (as well as the numbers). Worse than that, it knocks down the edges unevenly. If one face has edges that are more rounded than the other faces, the die is less likely to stop on that face, causing the number on the other side of the die to appear less often. If the edges around the 1 are overly rounded, you are less likely to roll a 20!
What About The Blemish?
Game Science dice are die-cast (just like all other dice). Unlike other dice, they are not tumbled. This allows them to keep their sharp, crisp edges. However, tumbling is the process that smoothes out the manufacturing mark (where the die was cut from the die-cast frame). Because of this, Game Science dice retain that manufacturing mark (or blemish).
A common rumor is that this blemish causes the dice to roll funny. Extensive testing has been performed on Game Science dice. Every single test conclusively proved that the blemish had significantly less impact than the rounded edges found on other dice. In other words, Game Science dice presented each face with much more uniform frequency than other dice.
If a particular die has an overly noticeable blemish, it is a simple matter to sand it down by hand or smooth it out with an x-acto knife.
Where To Buy Game Science Dice
Most game stores that sell dice carry Game Science dice (or can at least order them). Unfortunately, such stores tend to mark them up quite a bit. You can also find them online through Amazon and other sources. The best price I have found is at Game Station. They are the recommended source listed on the Game Science website. They sell every set produced and offer opaque or clear, with hand-painted or unpainted numbers. The unpainted dice are quite a bit cheaper and very easy to paint yourself.
The 7-pc dice sets include the standard assortment of dice: d4, d6, d8, d10 (1’s), d10 (10’s), d12, and d20. The 12-pc sets include five additional “Zocchi” dice: d3, d5, d14, d16 and d24.