Polyhedral solids used to generate random numbers. In tabletop RPGs, dice are the most common means of introducing chance into the proceedings. Many players enjoy collecting dice of varying colors and shapes.

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101
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5answers
17k views

How does rolling two dice and taking the highest affect the average outcome?

D&D 5E has an "advantage" concept where instead of rolling 1d20, you roll 2d20 and take the highest. Likewise, disadvantage means rolling 2d20 and taking the lowest. How does this affect the ...
72
votes
13answers
14k views

3d6 vs a d20: What is the effect of a different probability curve?

What is the effect on game play of replacing d20 rolls with 3d6 rolls in a D&D 4e campaign? I started thinking about this after reading this question where the example was given of playing a d20 ...
56
votes
22answers
2k views

What approaches are there to lessen or eliminate reliance upon dice in an RPG? [closed]

Is it necessary to use dice all the time in a dice-based RPG system? In other words, are there occasions or means by which you speed up gameplay by either reducing the number of rolls or removing the ...
51
votes
22answers
9k views

How do you play D&D when we don't have dice to play with?

Now I came all the way from Indonesia, and I can tell you that D&D is not a thing. Hence, it will be tough for me (and for my wallet) to find shops that sell d4, d12, d20 and so on. Let these dice ...
50
votes
2answers
6k views

How can I test whether a die is fair?

I have a d20 that seems to be, well, remarkably lucky.* How can I determine whether it's really just luck, or whether the die is in fact unfairly biased? *) Well, I don't, really. This is actually ...
49
votes
6answers
13k views

Is 3d6 the same as 1d18?

This might actually be a better fit for Mathematics SE, but since RPGs are the intended application of the information I've decided to put it here (it has nothing to do with me being lazy and not ...
46
votes
28answers
12k views

What can I use in place of Fudge Dice? [closed]

If someone doesn't have any fudge dice, what are the best methods to replace them and why? Term: Fudge Dice are six sided dice with two sides labeled with a +, two sides with a -, and two sides that ...
40
votes
7answers
5k views

Is it possible to produce a bowl-shaped probability curve with dice rolls?

In D&D's basic D20 system, you roll one d20 and add in some modifiers, then compare the result to a target number. Each modifier effectively adds or removes a 5% chance of success with the roll. ...
38
votes
6answers
3k views

At what point did polyhedral dice become part of D&D?

I was reading some articles the other day about Gary Gygax, Dave Arneson and the history of Dungeons and Dragons. I started to wonder: Where did these guys from Wisconsin get the now iconic polyhedral ...
34
votes
6answers
3k views

Is there a name for the standard 7-die set?

I'm curious if there is a formal name for the standard 7-die set (d4, d6, d8, d10, d10*10, d12, d20), and is there any backstory or history associated with it?
33
votes
2answers
3k views

What are the statistical implications of doubling damage on crit instead of doubling the dice rolled?

I've been playing with a group that frequently allows players to double the value of dice rolled for crits (and other things) rather than rolling double the dice. Example, someone crits with 2d6 and ...
31
votes
7answers
17k views

When rolling percentages, do 1d100 and two d10s (percentiles) share the same probabilities?

I know d100s are shunned because they take too much time to roll, and 1d10+1percentile is really fun, but do they share the same probabilities? Is it better to use a (digital) d100? Also, do d100s ...
28
votes
20answers
4k views

Dealing with large amount of dice rolls for a single damage roll without making it drag on

There are a number of spells and abilities that involve large amounts of dice rolling. For example, a high level rogue can have up to 10d6 in Sneak Attack, and a high level Wizard can have a ...
28
votes
8answers
4k views

What is the statistically superior character creation method, twelve 3d6 or six 4d6?

The D&D 3.5 Player's Handbook gives (among others) two preferred methods to roll ability scores for a new character: a) roll 3d6 twelve times and keep the preferred six results, or b) roll 4d6 and ...
28
votes
6answers
24k views

How do I read a 4-sided die?

In the Red Box starter game, when you choose to be a Rogue, it says that your damage is 1d4+4. When I rolled the dice, it had all three "4" symbols facing up. Did I do 4 damage, or do I add them up to ...
27
votes
6answers
5k views

Can I randomly determine the outcome of an event with 5 outcomes with a d6?

Could I use a d6 to find which event would happen given there were 5 events, lets say named A, B, C, D, and E? I am thinking that for 1–5, you could have the events assigned to their respective ...
27
votes
7answers
3k views

Does the chance of rolling a 1 in a pool of d10s increase as the number of dice increases?

Just a question about probability. If I roll one d10 there is a 10% chance of rolling a 1. Assuming that receiving any 1s among the results of a pool of dice is a failure, what are the chances of ...
26
votes
16answers
5k views

How can I help players learn to tell apart the standard polyhedral dice?

We've all been newcomers to tabletop gaming at some point and had to learn for the first time which die was which. I vividly recall the first request for me to roll a 'percentile' and blankly staring ...
26
votes
8answers
6k views

How reliable are dice rolling programs?

Dice programs and their use around the table are on the rise: Are there any characteristics, qualities, or quirks of results obtained by using dice programs which might detract from play? Improve it?...
25
votes
7answers
7k views

How do I read 2d10 as a percentage?

I own 2 d10 dice with differently numbered sides (0 through 9, and 00 through 90), although the same applies for two identical 'regular' d10 dice. How do I read the percentage value if I use both ...
25
votes
6answers
3k views

Are Earthdawn's dice mechanics as unfair and wonky as my player claims?

After an Earthdawn one-off running Misguided Ambitions with my regular D&D 4E group — because one guy was MIA — I had a discussion with one of the players about Earthdawn's dice mechanics. The ...
24
votes
3answers
2k views

Is the Saltwater Float represented in this question a good way to test for loaded dice?

Recently a question has popped up in the comments of another question I've recently answered where a player has happened to roll three 18s and other high stats at a table with his dice, which could ...
23
votes
6answers
3k views

How to deal with players rolling dice before establishing the context of the action?

I've been running a lot of fate and cthulhu-dark games lately, and I've run into a common challenge with several players: They'll roll the dice before we establish what kind of action they're taking ...
20
votes
8answers
5k views

Cheat-proof online die roller? [closed]

I am looking for an online die roller that works similarly to the following: The GM provides a string identifier to the player. E.g., "gandalf attacks balrog #12" The player enters the id on the ...
19
votes
10answers
4k views

Produce high-contrast numbers on un-painted dice?

I picked up some Gamescience d20s based on this question. I got the black ones. They are very shiny! Of course, they are unpainted. How can I paint/ink/color the numbers to get very high contrast ...
19
votes
7answers
2k views

How can I get Sharpie off my d6s?

I used the Make Some option to have Fudge dice while waiting for my Evil Hat Fudge Dice to arrive. Now they're here, but my d6s are still all Sharpied up. The Sharpie will smudge and smear and get ...
19
votes
2answers
3k views

What is the correct term for the die with multiples of ten written on it?

What is the correct term for this die? It is a standard die in any 7 dice set. It has multiples of ten from 10 to 00 written on it (10, 20, 30, 40, 50, 60, 70, 80, 90, (1)00). I seem to think that ...
18
votes
7answers
1k views

How can I roll a character's age using only d6?

I'm making a simple, slightly comedic home-brew RPG where a lot of the characters' base stats are randomized for comedic effect. This includes the characters' age. (So you can have a ridiculously ...
17
votes
7answers
2k views

What game/circumstance uses Fudge dice?

I read with much interest the question about Fudge dice, but what are these dice useful for?
16
votes
8answers
5k views

Can I substitute a d3 with a d6?

I don't have a lot of dice yet, just a basic set of polyhedral dice: 1d4 1d6 1d8 2d10 1d12 1d20 Sometimes an ability or save calls for a die that I don't have. Strike, Unarmed [...] ...
16
votes
4answers
3k views

Why does a d10 count from 0 to 9?

I have recently purchased (in Poland, if that matters) a set of dice, from d6 to d20. I'm a complete newbie (if not ignorant) to RPG in general, dice, and this sort of technical stuff in practical, ...
16
votes
3answers
10k views

How can one make a DIY “Silent Dice Tower”?

I currently use a Chessex Dice Boot for rolling dice at the table. It's fairly compact, very portable, and does a great job of minimizing the table area required for a good roll of the dice. There's ...
16
votes
1answer
3k views

What is the definition of a natural roll on dice

So I am starting in the world of pen-and-paper RPGs, and sometimes the material I read mentions a natural roll, like a natural 1 is always a miss, and a natural 20 is always a hit. I understand that ...
15
votes
3answers
2k views

Dice Notation - Dice that start at 0

In the past I've toyed with playing games using dice numbered from 0 instead of 1. So, for example, playing a d20 system game with 3d8, numbered 0 to 7, treating a roll of 21 as an automatic success ...
15
votes
4answers
1k views

Is there a subtle difference between increasing DC and adding detrimental modifiers?

Modifying difficulty works in various ways within and between various roleplaying systems. But generally speaking, it seems added difficulty either modifies the target number (altering the check) or ...
15
votes
4answers
825 views

Unknowingly improving my players' luck

As a GM, I'd like to give my players a lucky item, one that improves their dice rolls. However, I don't want them to immediately realize that the item is improving their rolls. One thought I had was ...
15
votes
6answers
2k views

What do I do when I suspect players may be fudging rolls online?

I suspect my players may be fudging their rolls in an online IRC and Skype game. While I can't confirm this (for obvious reasons), I'm highly suspicious. I logged all their rolls over the course of ...
14
votes
3answers
1k views

Is there a pattern for d8 dice?

I've just bought a d8, and noticed that the number arrangement is different from my other one. My new die has only even numbers on one half, and only odd on the other half. My old die has 1,8,5,4 on ...
14
votes
3answers
30k views

Pathfinder Damage Dice Steps

I am building a Human Gunslinger character who uses the Racial Heritage feat to get access to the Goblin Gunslinger feat so he can use a large double hack-but without penalty. Problem is, the the ...
13
votes
2answers
2k views

Natural 20 when rolling with disadvantage

If you are rolling with disadvantage and roll a natural 20 on one of those rolls, which die roll do you take? My question stems from the fact that natural 20s count as critical regardless of ...
13
votes
5answers
478 views

100 sides vs 10 sides

I know they have 100 sided dice. I know we usually do the 2 d10 approach. I was tempted to get one. but it seems like it's almost a ball and doesn't seem very effective. For anyone that has one, what ...
13
votes
4answers
30k views

What is the best place to get quality polyhedral dice? [closed]

What is the best place to get quality polyhedral dice? Or what is the best brand of gaming dice? My dice are old and chipped and it's time for new ones. I'm getting back in the game after a break ...
12
votes
9answers
3k views

How to help players who roll really badly? [duplicate]

Scenario: player rolls to attack, rolls a 1. Next round, rolls a 1. Round after that, rolls a 1. Fourth round, rolls a 2. This really happened today. He was going back and forth between two different ...
12
votes
6answers
1k views

Do all RPGs make critical failures always act as event triggers?

In all the games I remember playing, critical failures have always, in every case triggered an event. This critical failure is due to exceptionally bad rolls on dice, either a 'natural one' in DnD or ...
12
votes
7answers
1k views

Dealing with extreme luck

As a DM for 4th edition, I have a rather interesting bunch of players, but 4 of them that show up at my table tend to have extreme luck. 'W' and 'J' both have bad luck--there are nights where they ...
12
votes
4answers
3k views

Do crystal dice offer any advantages or disadvantages?

Do crystal shaped dice (example) provide any notable advantage or disadvantage over traditional hobby dice shapes (example)? Are they equally random?
12
votes
2answers
208 views

Is one Proficiency die better than two Ability dice?

My GM often allows me and the other players to roll one skill or another for various checks (Coordination or Athletics is a common option; the character either balances across an obstacle or bypasses ...
12
votes
3answers
9k views

Common Dice Mechanics [closed]

I'm thinking of doing a study/paper/educational-piece about different dice rolling systems in RPGs and other games. I've played RPGs in the past but it's been years so I wanted to be sure I knew the ...
12
votes
2answers
1k views

Help Writing an AnyDice Function for a Weird Dice Mechanic

I've thought of a dice mechanic that I'd like to test the numbers for, but it's complicated enough that I don't know how to model it in AnyDice. It's sort of a modified dice pool, where the successes ...
12
votes
3answers
2k views

Dice marked in Japanese

I am trying to find d&d dice sets marked with Japanese characters. I've only been able to find d10 sets. Is there any place I can buy complete sets (d4, d6, d8, d10, d12, d20)?