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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-1
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0answers
27 views

d100 mechanics? [on hold]

I got a D100 recently thinking it might be interesting to use in my homemade RPg campaign but then my creativity fell really quick with the use of the D100. The only thing i can think of is that it ...
20
votes
5answers
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 ...
11
votes
3answers
506 views

What is the average roll of a die with an expanded explosion threshold as compared to one with an expanded success threshold?

This is going to be a bit of a weird question, but I'm figuring dice pool probabilities for a homebrew system and I want to know how certain abilities should be priced regarding their use. The basic ...
7
votes
1answer
799 views

Dice pool success probability with one exploding die

I'm looking for the math behind the following: Players have a pool of 3–11 d6s, and have to get from 1–4 successes, "success" being a roll of 5+. One of these dice is special (represented ...
9
votes
8answers
3k views

How do I approach the probability of a d100, using 2 d100's?

We're running an almost 100% homebrew system, which uses skills in order to craft objects during play. Allow me to first formulate an example to explain my question better: Jack is quite the mason ...
31
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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 ...
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 ...
3
votes
6answers
637 views

Dice probabilities when rolling more dice than needed

I have a very similar question to Using AnyDice to determine the odds of getting a specific number sequence on multiple dice I want to know the odds of rolling a 1,2,3 out of 4d6. Or getting a 3 and ...
6
votes
3answers
186 views

Improving “fumbles” when using pools of d10s in TROS

The original rules in TROS use varying pools of d10s to attempt rolling one or more successes against a varying Target Number (e.g., commonly a TN=7). Roll the pool of dice, count up the successes ...
28
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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 ...
25
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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 ...
5
votes
2answers
1k views

Using AnyDice to determine the odds of getting a specific number sequence on multiple dice

After a few hours trying to design the proper code in AnyDice, I had to admit I didn't find a proper way to reach my goal, so I'm wondering if someone could give me a helping hand. Here is the ...
3
votes
2answers
656 views

How to model a dice pool with re-rolls mechanic? [closed]

I have a dice mechanic where players roll a number of D10s and have a different number of re-rolls they can use to maximize the total. For example: The player has 3D10 and 2 re-rolls. They roll 9,6,3 ...
6
votes
1answer
240 views

Calculating 6D6 similar to poker dice [closed]

I keep coming back to the idea of building a game system around a 6D6 roll, taking matching sets of numbers and 'straights' as measures of effect. This guarantees that something always turns up (as ...
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 ...
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 ...
101
votes
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 ...
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 ...
9
votes
1answer
945 views

Is this die from an RPG?

The following die is light black plastic, with gold paint on the carved side icons, and is 0.5 inches in length, width, and height. Is this die from an RPG? If so, which RPG? Does the die have a ...
1
vote
1answer
49 views

Improving “fumbles” when using pools dice in TROS, part 2

(Thank you all so much for your help on my last post! I appreciate the explanations, graphs and suggestions given. As I continue to experiment with my homebrew variant, I do a lot of probability ...
5
votes
1answer
96 views

How would conflict change if only d6s were used?

I'm hacking on the system, trying to replace all the dice with d6s. Since gaming dice are expensive in my country, I was wondering how feasible this adaptation would be and what effect it would have. ...
5
votes
2answers
254 views

Can you roll a dice pool or multiple dice rolls with only one die?

Say I'm playing Vampire: The Requiem and I need to roll 5 d10's. Can I roll a d10 5 times instead of having 5 d10's? Can I split it up if I must, so if I only had 4 d10's could I roll the 4, then roll ...
14
votes
3answers
29k 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 ...
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 ...
7
votes
5answers
1k views

Random selection from a set of arbitrary size?

I'm new to Dungeons and Dragons in general, and none of my friends have played before either but we were looking to start a campaign (still flipping back and forth between 3.5 and 5, I think 5 sounds ...
6
votes
5answers
424 views

Dice results hidden from the players? [duplicate]

Does it make any sense to specifically hide the results of a player's dice roll from the said player? This method is based on my assumption that many actions do not immediately reveal themselves as ...
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 ...
12
votes
2answers
207 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 ...
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 ...
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 ...
3
votes
3answers
652 views

Which manufacturers make/sell nested dice? [closed]

By nested dice I mean a transparent hollow plastic n-sided die which contains a smaller n-sided die within. I've searched on Chessex, Shapeways, and Q Workshop but either I've missed these offerings ...
0
votes
3answers
247 views

How do you roll dice in space? [closed]

Let's imagine you get to go to International Space Station and you like to roll dice. But they don't stop flying around the station because you're in space where gravity is not high enough. How can ...
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 ...
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, ...
8
votes
1answer
412 views

What is the meaning of the term “natural 20”?

In Dungeons & Dragons, does "natural 20" mean rolling 20 on a single roll as opposed to a composite 20 from multiple dice? Or does it refer to something else?
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 [...] ...
23
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 ...
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 ...
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 ...
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 ...
2
votes
1answer
189 views

DMing without any resources: Is this DND anymore? [closed]

I have a DM who doesn't use a map or minis, rarely uses our stats, and usually only uses rolls. Sometimes he uses a book. Most of the time he's really only telling a story, and we're telling it with ...
24
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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 ...
1
vote
2answers
486 views

How can I find dice shops?

Is there an online resource that lets me find places where I can get dice? I'm currently in Germany, but an international resource would be good too. By places, I mean physical shops - not a list of ...
2
votes
0answers
101 views

Is there any other way to determine result than throwing dice? [duplicate]

I know that you can go full narrative and not use dice at all, but that's not what I'm asking about. I want to know any other (pseudo)random way to determine the result of action? My friend suggested ...
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 ...
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 ...
-2
votes
1answer
254 views

When to roll during spellcasting? [closed]

I have played a few games of D&D with my equally as inexperienced friends and there are some uncertainties we have about spells that I would like to clarify before I take my turn to DM. When ...
1
vote
1answer
179 views

What colors were the polyhedral dice in Red Box D&D? [closed]

My first Dungeons and Dragons set was in a red box (purchased around 1989 plus or minus a couple of years). The dice that came with it were of multiple colors, some of which I cannot remember. From ...
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 ...
5
votes
3answers
837 views

Help Calculating Dice Odds for a Unique d6 Dice Pool

I'm attempting to design a unique d6 dice pool system, and I want to try programming the probabilities in AnyDice but I'm not sure how. Here's how the system works: Dice pools are between 2 and 10 ...