Dice Coin FAQ
The following FAQ questions are addressed on this page:
What if the marker on the Base is pointing to a line between two numbers?
Why are there no percentile Dice Coins (00, 10, 20)?
Are Dice Coins accurate?
How to use Dice Coins
How do they offer a more immersive gaming experience
Comparing Dice Coins to Dice
Legal Information
What if the marker on the Base is pointing to a line between two numbers?
If the marker is pointing to one of the sector lines between two numbers, or if you have any doubt of the result, use the first number to the left of the marker line as the result.
Why are there no percentile Dice Coins (00, 10, 20)?
We didn't want people to spend money on a Dice Coin that we feel is rarely used or not needed.
When you use a d10 Dice Coin, the 0 represents a 10 when using it as a d10.
If you need a percentile number, you simply spin the d10 twice. The first number represents the 10 digit and the second number represents the 1 digit. For example, a 0 and a 9 would be 09. A 5 and a 0 would be 50. And two 0's is a 100.
Are Dice Coins accurate?
Are Dice Coins accurate? Yes, very accurate.
Due to the variations in character art, the coins are not perfectly balanced. However, this does NOT affect the accuracy. The reason is because you manually stop the coin once it is spinning. When you choose to stop the coin has nothing to do with the coin's balance and thus the result. Granted, if you allowed the coin to stop on its own, the balance could affect the accuracy, but that is not how they work.
While testing the durability of the Dice Coins, I spun the Five-Headed Dragon Dice Coin a total of 3000 times and recorded the results.
I provided these results to Matthew Neagley, who has a Master's of Science Degree in Statistics. He writes extensively for the Gnome Stew Gaming Blog and has analyzed numerous dice. Based upon his protocol for determining accuracy, he determined the results were EXCELLENT with a p-value of .97.
Below is one of the charts. However, for a complete analysis, see the results at the end of this page.
How to use Dice Coins
The videos on the product page show how Dice Coins are used. However, here is more specific information.
The Dice Coin system consists of a Dice Coin and a Base.
The front of a Dice Coin has sculpted 3D artwork in the center and numbers spaced out on the perimeter edge. The numbers correspond to a dice type. For example, the d20 Dice Coin has 20 numbers.
Each number is located within a sector that is defined by the lines on either side of the number.
The backs of all Dice Coins share a common design with the logo and raised knob in the center.
The Base is placed with the sidewalls and marker line facing up on any semi-flat surface. This can be a table, book, notepad, gaming pad, carpet, or even grass.
The marker line on the Base should be in front of you in the six o'clock position. Place the Dice Coin on the base so the raised knob is resting in the center of the Base.
The numbers and character art will be facing up. It doesn't matter what number is facing the marker line. However, most people will prefer to place the dice type number on the marker line since the artwork is oriented around this number.
You then spin the coin. It is up to you how you spin it. You can spin it with fingers from one hand or both hands. You can spin it by placing your fingers on top of the coin or gripping the coin by the edge through the open area of the Base. It is up to you. It may take you a few times to get used to it, but it will quickly become natural. You will see that once you get the right feel, you don't have to spin it very hard.
Once the numbers and character is completely "blurred" due to the spinning, wait at least 1-3 seconds and stop the coin by placing one or more fingers on the coin. If you want a dramatic effect by prolonging the result, you can stop it just as it starts to slow its spin but before you can see any numbers or identify features on the character.
Once you stop it, look at the marker line on the Base and see what sector it is pointing to, the number in that sector is the result.
Can you use them without the base?
Yes you can. The original version of Dice Coins did not have a base. You simply placed the coins on a hard surface, spun, and then stopped the coin with your finger. The first completely visible number to the left of your finger was the result. Here is an old illustration from our first Dice Coins.
How do they offer a more immersive gaming experience?
Character Dice Coins
All characters and monsters are depicted on d20 Dice Coins.
In the majority of RPG systems, d20's are used to determine hits, saving throws, skill checks, etc. It is the most important dice.
You can use a d20 Dice Coin in several ways:
- It literally represents your character. For example, if you are playing a Paladin you can choose to use a d20 Paladin Dice Coin.
- It has meaning for you or your character. For example, your character was saved by an Owlbear as a child and thus you use a d20 Owlbear Dice Coin as homage.
- You personally like the art on a particular d20 Dice Coin. For example, you love dragons so you choose to use a dragon d20 Dice Coin.
- DM/GM's can use them in much the same way. For example, during a battle with skeletons the DM can use a d20 Skeleton Dice Coin.
Damage Dice Coins
Fantasy battle scenes are depicted on the d4, d6, d8, d10, and d12 Dice Coins.
In the majority of RPG systems, these are used to determine damage from weapons, magic, etc.
The art on these Dice Coins is themed to represent some of the weapons or magic that does that amount of damage for that dice type. For example, the d4 depicts a wizard using magic missiles and a rogue using daggers. Both do 1d4 points of damage.
How do Character and Damage Dice Coins work together?
We will use the Paladin example. You use a d20 to determine hits, saving throws, skill checks, etc. However, when you use a particular weapon, you use a damage Dice Coin that corresponds to that weapon.
For example, if you are attacking with your long sword, you would use a d8 Dice Coin to determine damage. If you throw your Javelin, you would use a d6 Dice Coin. If your Paladin was desperate and needed to use their dagger, you would use a d4 Dice Coin.
Secondary Uses of Damage Dice Coins
You can also use the Damage Dice Coins to determine hit points when leveling. Or you can use them whenever you need a particular random number.
Inclusiveness and Representation
Dice Coins will typically be used in role playing games. A central characteristic of a role playing game is that you play a character that you have chosen to identify with.
One of my goals was to make Dice Coins as inclusive and representative as possible.
For example, there is no skin or hair color on any of the characters. It is just a metal plating color. This allows you to imagine or paint your character in a way that you identify with during a game.
In addition, we specifically designed some coins where the sex and species is not obvious.
This would allow you to choose if your character is a male, female, non-binary, human, elf, halfling, etc. Examples of these include the rogue and paladin.
As we release more Dice Coins in the future, we will continue this practice and are very open to suggestions for future characters.
Paintable
Dice Coins can be painted like any miniature. You prime, paint, and add a clear coat.
Will the paint wear off by touching the coin? Most people will only paint the character and not the perimeter. When you spin a Dice Coin, you generally touch the perimeter.
However, with repeated and rough touching to the painted area, you could get some wear. Generally the clear coat would wear first. This would give you the opportunity to simply add more clear coat to protect the painted area.
Comparing Dice Coins to Dice
Appearance
Dice are beautiful but so are Dice Coins.
Immersive Gaming Experience
We discussed this before, but I believe there is no question that Dice Coins offers a more immersive gaming experience than regular dice.
General Use
Dice commonly wander across the table - thus you have dice trays and dice towers. On a rare occasion, you can get a Dice Coin that jumps off the base if you spin the coin extremely hard. Dice Coins are more contained and the results are right in front of you.
Learning Curve
It is very easy to roll a dice. With a Dice Coin, there is a little bit of a learning curve while you get the right feel on how much pressure to use and which spinning method works best for you. Once you have those down, which only takes a few spins, they are just as easy to use as dice.
Cheating
With regular dice, that are various ways to cheat. Most of them are obvious. That is why in a casino they require you to throw the dice against a back wall.
It is the same with Dice Coins. If you use them contrary to how they are supposed to be used, such as stopping them when they have slowed enough to see the numbers, then you can manipulate the results. However, this will usually be obvious.
The simplest way to cheat with dice or Dice Coins, is to simply "misread" the number, since others are rarely looking over your shoulder.
Durability
With metal spinning on metal, are Dice Coins durable? Very durable. Take a look at one of the prototypes for the Base. I spun a Dice Coin on it over 4500 times. As you can see, some of the colored plating has wear marks. However, the surface below it is nice and flat.
The same with the knob on a Dice Coin. I spun this coin over 2500 times. As you can see there are wear marks on the raised knob. However, it does not affect the spin.
Even though the function of the coin is not affected, you will get some wear marks on the knob and center area of the base within a few dozen spins. There will be NO wear marks on the front of the coin where the main artwork is.
Legal Information
We originated the brand name Dice Coins in 2016 and claim the trademark rights. In addition, we have filed a US Patent Application for the Dice Coin system (and variations).
Due to the nature of antique plating, plating color varies with each coin. In addition, due to the nature of the metal casting process, there may be minor imperfections and differences from coin to coin. This is normal and not a defect.
More Info on Accuracy
- Notation:
- df – degrees of freedom, which particular chi square curve we’re comparing against. Depends on the number of sides the die has.
- Chi .05 crit val — the value, for the particular chi square curve we’re looking at, that separates the rarest 5% of groups of rolls from the rest. If the Chi Test Stat exceeds this value, we say the die is not fair. There are other critical values for other tolerances.
- Chi Test Stat — the value we calculated from our rolls. Compared to the critical value.
- p-val — how common the results we observed were. p-values fall between 1 and 0. Closer to 1 is better. Lower than .1, .05, or .01 are usual ground for declaring a deviation from the ideal standard.