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Questions tagged [dice]

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.

50
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8answers
4k views

How to approximate rolls for potions of healing using only d6's?

I want to make tabletop potions of healing out of corked vials (test tubes) filled with dice. Each vial would be labeled and filled based on the potion it represents. For example, a vial for a potion ...
21
votes
6answers
5k views

What is the difference between rolling more dice versus fewer dice?

Let's say there are two attacks: one rolls a 10d10 and the other rolls a 5d20. Assuming the modifier was the same, which rolls would have better chances of rolling average, and which would have ...
16
votes
9answers
3k views

How can the probability of a fumble decrease linearly with more dice?

I'm working on a simplified RPG system that uses only D6s, and I want a mechanic for fumbles/critical fails. Depending on how good the player character is, they have 1-5 dice to roll and they have to ...
23
votes
2answers
2k views

What is the Guild Die for?

I was gifted a set of Guildmasters’ Guide to Ravnica Dice, and, upon opening, I encountered the “guild die” (see the picture below). I’m a bit confused about what its purpose is. Could someone please ...
8
votes
2answers
233 views

How can I use AnyDice to simulate rolling 6d6, and dropping the 2 lowest and 1 highest dice?

I'm running a new D&D 5e campaign soon and I'd like to try rolling for stats with some guardrails. Doing some test throws at the table, I liked the look of rolling 6d6, then dropping the highest ...
20
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3answers
2k views

What abilities allow me to reroll or replace die rolls?

I am building a "lucky wizard" for my newest campaign. The concept is to use abilities and features that allow me to reroll (or replace rolls) attacks, abilities, and/or saving throws (such as the ...
3
votes
1answer
163 views

How can I set up a Roll20 macro to roll certain additional dice depending on the results of an initial die roll?

I am playing a wonderful homebrew campaign running D&D 5E via Roll20 (I have a Basic account), and I have just rerolled as a wizard. One of my spells, prismatic spray, requires that I roll 1d8 for ...
4
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2answers
76 views

How do I use the encounter chance tables in the AD&D 1e DMG?

I'm trying to set up a campaign and I'm not great at math. We play old school 1e AD&D. The 1e DMG gives two tables on page 47 for chance of an encounter. The base chance of encounter depending on ...
19
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6answers
2k views

How do I determine the probability of rolling various ranges of numbers on 4d10, 5d10, etc.?

After realizing that my knowledge of how probabilities function has waned significantly, I'm wondering what the probability of rolling multiple 6's or higher (6-10) on four 10-sided dice, five 10-...
5
votes
1answer
146 views

Chances to roll a number of results greater than 5 on a number of d10s

I'm trying to figure out how to implement a dice roller function. I would like to know the chance in % to get [1 to X] results of 6+ on [1 to 10] 10-sided dice. So, for example, I would like to know ...
7
votes
4answers
2k views

What counts as the lowest value on a percentile die? [closed]

If I'm making an image with a standard set of seven dice, all showing as having rolled the lowest possible result, I obviously want to have that be 1 for six of them, but what should I use for the ...
4
votes
3answers
306 views

In AnyDice, how can I calculate the number of successes in the highest dice in a given dice pool?

I've tried the following code output [count {5..6} in [highest 2 of 10d6]] Which yields 0: 99.90% 1: 0.10% However, these ...
3
votes
0answers
77 views

Plans or Blueprints for a game table [closed]

I have been gaming for many years, and now that I have a dedicated room to keep all my gaming stuff, I would like to build a table. So far we have been using a plain dining room table. Has anyone ...
3
votes
1answer
403 views

Is there a way to turn off default crit damage rolls in roll20?

I have a crit table I use for random crit events. The table is recursive and triggers whenever a 20 is rolled, but the default programming in Roll20 also rolls the additional damage roll that's built ...
87
votes
5answers
13k views

Rolling a D10 (0-9) for hitpoints. What do I get with a zero?

My character leveled up and I rolled a D10 to determine the rise in hitpoints. The dice that I used goes from 0 to 9 and I rolled a zero. The DM told me that this means I only add my modifier (0 + 3 = ...
26
votes
6answers
4k views

Are these two methods of handling Elven Accuracy “Double Advantage” mathematically equivalent?

For context, part of the Elven Accuracy feat (Xanathar's Guide to Everything, p. 74) states: Whenever you have advantage on an attack roll using Dexterity, Intelligence, Wisdom, or Charisma, you ...
2
votes
1answer
638 views

How to check if a dice set is correctly weighted? [duplicate]

So let me give you a bit of backstory, I went to a friend's place to play DnD and I decided to put my solar powered dice to charge on top of my friend's standing lamp with the plastic box practically ...
31
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4answers
7k views

Is there a name for this 20 sided die with two 1s, two 2s, etc?

Purchased this die from a hobby/tabletop store yesterday, mainly because I thought it looked cool, and that it was funny that it was so hard to read the faces: I was passively rolling the die, and ...
2
votes
1answer
357 views

I need a dice system with a unique behavior and rate of growth (preferably in ANYDICE to verify) [closed]

I am looking for a defense system where the probability of hitting is proportional to the inverse of a quadratic polynomial with respect to defense. I don't care about attack scaling yet. If you ...
28
votes
3answers
2k views

Is GameScience's non-cylindrical seven-sided die a balanced/fair die?

You might have come across GameScience's seven-sided die before: There's mixed discussion of whether it might be biased toward the 6 and 7 faces (the 6 being on the opposite side of the 7 you can see ...
11
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3answers
336 views

Probability of a d10 matching any faces on another Nd10

I am trying to figure out the probability for one separate d10 to have a matching face with a pool of d10 comprised by up to 5 other d10s. So just to make myself clear, the player rolls 5 d10s and a ...
0
votes
2answers
109 views

Dice Rolls for PBEMs [closed]

Is there an online dice roller that has some kind of confirmation mechanism so it can be used by forum/PBEM games? For example? Bob: "I kick open the door" MC: Roll here [gives link] Bob: [...
11
votes
3answers
806 views

Are there 12-sided d4 dice? [closed]

I don't particularly like D4 dice since they can't roll well, so I was thinking about using a D12 since mathematically, if you do modulo 4 + 1 you should still have an even distribution among the ...
4
votes
1answer
489 views

Which attack yields higher average damage?

I am playing a fighter in a (heavily homebrewed) D&D campaign. The way the DM and I have created my character she has the option of using her main weapon, a quarterstaff, either one handed or two ...
5
votes
2answers
732 views

Is there a standard d10 dimension ratio?

Of the six standard game dice (d4, d6, d8, d10, d12, d20, ignoring labeling variants), all but one of them are regular polyhedra, meaning their size varies in only one dimension (scale). The d10, ...
4
votes
1answer
573 views

If the saltwater float can (with difficulty) be used to determine a dies balance, would a more dense liquid such as galium be better at doing so? [closed]

In another question I asked if the Saltwater float present in a specific youtube video was capable of determining any differences in mass between the faces of a die in determining the balance of a ...
5
votes
3answers
377 views

Modelling opposed dice pools with a swap

I have a dice pool system that awards for instance damage to the loser of an opposed roll. Players roll their pool of dice, with each player's target number being the highest number rolled by their ...
66
votes
3answers
14k views

Does microwaving a die significantly alter its balance?

I saw a rumor online a long time ago that stated by microwaving a die on a specific face it would be more likely to land on said face and have been looking for science by which to either prove or ...
2
votes
2answers
557 views

What's the name of this dice set with blue letters on red-and-black?

I have a red speckled dice set with blue numbers, and I think the company that made them was Chessex. However, I have searched Google for a few minutes, but could find nothing on this set. I also have ...
29
votes
6answers
7k views

Dice Rolling Method Fairness

Recently, in D&D sessions I have been rolling poorly (nothing over 10), and thus tried ways to improve my rolling. I was using a plastic solo cup last session, and got really good results compared ...
17
votes
4answers
3k views

What dice do I need to make for a Pathfinder player?

My son is off at college, and he has recently started a d&d group. We are close, but the distance between us, along with his schedule, have kept us from communicating as much as I'd like. I ...
2
votes
0answers
58 views

What's the limit of GM forcing things for the players' enjoyment? [duplicate]

We all know the dice's outcomes may be unpleasant, expecially in the case of story events, when players may feel that they had no control on something except rolling the dice higher. Should the ...
5
votes
1answer
206 views

Does anyone know which company made these dice with engravings surrounding the numerals?

(image source) These dice are so beautiful, but I don't know what company makes them. Does anyone know what company made these dice?
2
votes
2answers
225 views

2 dice pools roll matching highest [closed]

Playing with building a battle system in which opponents each roll a number of d6 equal to their Combat skill, and I want to determine the likelihood of both parties rolling the same highest value. ...
1
vote
1answer
1k views

What 5e build can throw the most dice regularly?

Background A new player recently played D&D for the first time in my regular campaign. I created a character for the player to ease her into the game. Afterwards, we discussed what she liked and ...
9
votes
1answer
1k views

Can you reroll the dice on the same roll two or more times?

Few days ago, our hoity-toity halfling tried (yes, again!!) to impress people around him with his educated manners, his glamorous hat, his luxurious vest, pants and boots, his swanking jewelry and his ...
1
vote
1answer
431 views

How can I fudge die rolls when they're made out in the open? [closed]

At some tables, dice are rolled on the table and are open to everybody to see, and this can't be negotiated. This can make it hard for the GM to fudge with the visible part of the results, if the ...
5
votes
3answers
457 views

How can I calculate the probability of being able to purchase a card in my custom die system?

I'm trying to work out the Probability of reaching a total with a custom die system. Each die in this system has 6 sides: 1 Sword, 2 Sword, 3 Sword, Political, Castle, and Wizard. Each player starts ...
7
votes
1answer
2k views

How do I read polyhedral dice?

I found a set of d4-d20, but apart from the d6 and the d4 (with the help of How do I read a 4-sided die?), I'm not sure how to read them and I'm new to these kinds of dice. How do you read a d8, d10, ...
23
votes
4answers
12k views

How does rolling a 1 on a skill check play out if you have a +9 or better to that skill?

My DM is telling me a natural 1 is worst possible result, but when my build reaches Sorcerer 8/Bard 1, my Persuasion bonus will be +10, meaning my worst roll should be an 11. Right?
29
votes
5answers
11k views

How does Halfling Luck (re-rolling my Nat 1's) affect my dice outcome?

The Halfling Luck racial trait lets you reroll natural 1's on checks, saves, and attack rolls, but you must keep the second result. With Advantage or Disadvantage, it lets you re-roll only one of the ...
1
vote
0answers
112 views

Non-dice outcome determination tool for an online game? [closed]

I am looking for a way to determine the outcome of an event in a pen & paper style rpg which is played online through voice and text chat, preferably in such a way as to eliminate the need for a ...
7
votes
2answers
499 views

What can I read about how we tie the stochastic characteristics of task resolution into statements about the nature of a game? [closed]

I like making RPG systems. One thing I've noticed is that different kinds of task resolution systems make the game significantly different. Background For example, games like D&D 3.X and ...
6
votes
2answers
273 views

Is this the right formula for the total permutations of a set of dice? [closed]

I know the total number of permutations (binomial) on tossing \$n\$ fair coins is given by: $$\mathrm{Total} = 2^n$$ What about dice? If I grab some dice and roll \$4\mathrm{d}2 + 4\mathrm{d}4 + 6\...
82
votes
11answers
20k views

Player may be manipulating die rolls, but I'm uncertain. How do I approach the situation?

I'm a new DM for four people who are all friends (I am also friends with all of them). During the game, I observed one player turn a D20 from a lower number to a higher number a couple times with her ...
6
votes
2answers
253 views

Rerolling select dice instead of all when invoking an aspect

I've been reading into using Fate Core for an upcoming campaign and notice that when invoking aspects it's almost always for the best to take the +2 modifier over the reroll unless the roll is ...
6
votes
5answers
1k views

When rolling with disadvantage what is the chance to get a 1? [duplicate]

When you roll with disadvantage is the chance to get a 1 5+5 for 10% or 5X5 for 25%? Just sat down and rolled 100 times with disadvantage got 18 natural 1s and 0 natural 20s. Still don't know.
2
votes
1answer
276 views

Help with Anydice function for 3d10 dice pool

I'd like to see the probability distribution for 3d10 being rolled, where the highest number is positive, the lowest (closest to 1) is negative, and the middle die is ignored. (As a way of providing "...
5
votes
1answer
432 views

Help with probability for a complicated dice pool mechanic

I'm putting together a system with experimental dice mechanics. I want to know the probabilities involved, preferably in a way such as anyDice where I can easily change all variables and get the ...
1
vote
3answers
454 views

What mistakes can you make when you are rolling polyhedral dice? [closed]

Sometimes I keep getting the same numbers on my new and first polyhedral dice and it feels like I'm doing something wrong.