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Questions tagged [dice]

For questions primarily about dice themselves: 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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31 votes
2 answers
3k views

"Dee-twenty" and "die-twenty" pronunciations

(I asked this question recently on reddit, and got a mixed assortment of not-quite answers.) Most gamers pronounce 'd20' as "dee-twenty", or '3d6' as "three dee-six". But a certain ...
3 votes
3 answers
832 views

Help with "Roll XD12, and keep each middle dice as an individual result"

I've been playing with the idea of using 3d12, keep the middle, for skills rolls in my skirmishes (sort of simulating the curve of a 3d6 roll). But now I what to play with the idea of folding multiple ...
6 votes
4 answers
848 views

How does a low-accuracy, high-damage action work in World of Darkness's dice system?

I used to play D20 and D100-based games a lot. Recently I'm designing a game for modern audiences who were not familiar with the D20 dice stuff at all and was thinking of a modified version of World ...
6 votes
2 answers
676 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 ...
5 votes
5 answers
4k views

Calculating dice pool probability with limited rerolls

I need a probability calculation script that works with various dice and dice pool sizes, that accounts for a mechanic that allows you to reroll up to X dice that are failures, but ONLY once per die. ...
14 votes
11 answers
4k views

How to make a device to randomly choose one of three possibilities, with caveat that sometimes one of them is not available?

I don't like rerolls. I feel they break the speed of the game. Imagine, for example, that we have a monster with three attacks: claws, tail and bite. Each round it uses random attack chosen from the ...
27 votes
10 answers
4k 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 ...
8 votes
3 answers
759 views

How to calculate advantage/disadvantage with multiple dice (e.g. 3d6, 2d10, etc.)

How can I calculate 'advantage' and 'disadvantage' when multiple dice are included. For example: the highest 2 of 3d10 the lowest 3 out of 5d6 I'm looking for a general formula, so that I can ...
5 votes
2 answers
581 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 ...
100 votes
13 answers
34k 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 ...
3 votes
1 answer
350 views

A deck of poker cards as dice [closed]

What resource do you use for online play when it comes to drawing a playing card in addition to rolling a dice? If it is only about drawing 1/54 (pack of cards + 2 jokers) card where the result is red/...
13 votes
4 answers
1k views

Are there any role-playing games which use dice larger than a d100?

AFAIK, Dungeons & Dragons' largest die is a d100 (even though in practice people very often roll two d10s). Are there any role-playing games whose rules mention dice larger than a d100? It seems ...
0 votes
1 answer
427 views

Do you know the angles of a face for a 7 or 14 sided die? [closed]

I need a 5 and 7 sided mathematically fair die. The 10 sided die could replace the D5 (If you're wondering the angles are nearly 52°, 128° and two 90° opposites from each other), but I couldn't find a ...
1 vote
1 answer
154 views

How to include pushed roll chances in anydice?

D6 dice pool from 0 to 6 where resolving 0 is rolling 2 dice and counting the lower result only. Rolling 5 or 6 means a hit. Rolling 1 is a mishap. Degrees of Success: Failure: no hits at all Mixed ...
3 votes
1 answer
366 views

Discord DiceParser (By RoliSteam/KDE?): ceil() function syntax needed (need to "round up" an average)

DiceParser "Full Documentation" (supposedly) Thought someone may know this, because I'm out of ideas. At this point... Goal: Get an average and round up. (In programming, it's usually called ...
5 votes
1 answer
2k views

How can I roll (and repeat) a dice roll of 4d6 drop lowest in Fantasy Grounds?

I'm trying to roll up a new character in Fantasy Grounds and ideally want to roll 4d6 and drop the lowest. So far I can do: /die 4d6 Questions: How do I 'drop ...
35 votes
8 answers
9k 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 ...
43 votes
7 answers
22k views

Is it stated in the rules to be standard practice to hide rolls in 3.5e?

I haven't been playing D&D for too long, maybe a year, but the DM of the main campaign I'm in always hides his dice rolls. I don't have an issue with it, but when I play with another group the DM ...
7 votes
6 answers
3k views

How can I simulate decreasing randomness even though randomness is increasing?

I am seeking a way to decrease variance as character skill advances. I've considered various mechanisms for dice tests. I have one in particular that does not accomplish this by default, but I like ...
1 vote
1 answer
76 views

How does success chance change when a certain die result counts as multiple partial successes?

Dice mechanism: count wins (> 4) of [Mod]d6 (AnyDice). Mod ranges from 1 to 10. Difficulty ranges from 1-10, 1 being trivial, 3 being moderate, 5 being difficult, and 6-10 being ever increasingly ...
2 votes
1 answer
165 views

How does the probability of success change by increasing the size of roll & keep dice pools or altering the difficulty number?

I want to better understand impact on probability of success granted by stat increases with the following dice mechanism: $$ \text{Dice Test} = \text{Roll}\ [3 + \text{STAT}]\text{d}6 : \text{Keep ...
7 votes
3 answers
2k views

Benefits of PC attribute generation methods? (custom RPG)

I'm working on a pen and paper RPG of my own, and have hit a snag on determining stats for beginning player characters (such as Strength, Intelligence, Perception and the like); I'm not sure whether ...
16 votes
3 answers
4k views

House Rules: Exploding dice for damage in 5e

My players and myself feel the "wear down" mechanic of hit points in 5e considerably subtract from the fun of the game and the strategy. I've been considering introducing a exploding dice ...
0 votes
1 answer
107 views

Part II of a probability problem I am working on for a mechanism to move tokens on a chart. Part I was two D4 dice. Part II is much different! [closed]

For Part I of this discussion, see this thread: Probability help on rolling two D4 with all doubles counting as zero except double 4s, which count as 4 That dealt with probabilities using two D4 dice, ...
5 votes
2 answers
841 views

Probability help on rolling two D4 with all doubles counting as zero except double 4s, which count as 4

So I have devised a game system involving two D4 being rolled to determine movement on a chart. It works by tabulating the difference between the dice pips on each die, e.g., Die 1=rolls '1' vs Die 2=...
1 vote
3 answers
1k views

How does this 2D6 probability math make sense?

I have a question about understanding the math to a previous question I had posed (answered successfully). Link at the bottom. The question is how does it make sense that rolling a 2D6 Die consisting ...
56 votes
8 answers
10k 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. ...
2 votes
2 answers
222 views

Using AnyDice.com to calculate Non traditional dice combinations

I am not learned enough to figure this out alone. Not yet at least. I am trying to figure out how to use anydice.com to get probabilities of two different situations with dice. The main question is ...
14 votes
11 answers
3k views

How can you map the probability of 2d6 onto a standard poker deck?

One of the projects I'm working on in my free time is the adaptation of the Urban Shadows milieu to a live-action environment. (In 2022, this is what one might charitably call a long-term goal.) One ...
8 votes
1 answer
316 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?
8 votes
5 answers
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 ...
75 votes
27 answers
21k views

How do you play D&D without dice?

I'm from Indonesia, and I can tell you that D&D is not a thing. Hence, it will be tough for me (and my wallet) to find shops that sell d4, d12, d20 and so on. You also rarely see people selling &...
39 votes
24 answers
7k views

Simulating these special dice on more regular dice

I've got a game that uses special dice for its resolution. Basically when making an opposed check, each side rolls a bunch of them based on the relevant trait, and whoever rolls most points wins. The ...
28 votes
8 answers
25k views

Why do most people consider a "00" and a "0" on a percentile roll a 100?

Assuming the results of a percentile roll ranges from 1-100, why would the results of a "00" and "0" roll be read as a "100"? In any other context outside of a percentile roll, the "0" on a d10 is ...
4 votes
5 answers
1k views

Calculating probabilities from d6 dice pool (Degenesis rules for botches and triggers)

I'm trying to generate a complex probability table for a dice pool with between 1--14 D6. The table will contain the probability of success and of critical failure, given a number of D6 rolled and a ...
20 votes
9 answers
4k views

How can I map a single d20 to a number of hits? (use case: Animate Objects)

The Problem Suppose we have a character using Animate Objects (D&D 5e) to animate 10 Tiny objects, and is attacking the same enemy with all of them. According to RAW, you'd make a separate attack ...
9 votes
5 answers
2k views

I need a 'standard array' for a D&D-like homebrew game, but anydice chokes - how to proceed?

So, I'm working on a homebrew RPG that is similar to several FRPs that use 3d6 sorts of starting values for attributes/characteristics. I know how to calculate the standard D&D (5E or other) '...
10 votes
15 answers
1k views

Is there a simpler way to roll for letters?

My daughter, age 10, likes to generate the names, or at least initials, when creating characters for various games (simple homebrew RPGs at the moment, or even just drawing the characters and ...
8 votes
2 answers
1k views

ANYDICE: How to roll 3d6 and in case 2 of them are a 6, add an exploded 1d6 to the result?

Pretty much the question. I tried the following: ...
9 votes
3 answers
5k views

What's the typical dice size? Or how big should the channel of a dice dispenser be?

I need some help. I'm trying to design a dice dispenser / tower where dice will slide or roll thorough a channel with a square cross-section. Many sources show that a typical d20 has a "diameter&...
15 votes
2 answers
3k views

Why was damage denoted in ranges in older D&D editions?

In early editions of Dungeons and Dragons, monster damage was denoted as a range of possible outcomes, for example, if a monster dealt 3d6 of damage, it would state the monster dealt 3-18 damage. You ...
56 votes
3 answers
11k 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 ...
6 votes
4 answers
265 views

Anydice: a pool where stress dice cancel out action dice of equal or lower value and return the number and value of action dice remaining in the pool?

I've seen a couple of other posts with similar but distinctly different dice canceling mechanics so I figured I would ask for a hand. The mechanic is this: Players roll a pool of Xd6 Action dice and ...
3 votes
3 answers
2k views

Dice odds of Doubles on 2D6 + D4/D6/D8/D10/D12 and Odds of 1

I have this odd idea for a resolution system and it goes like this. For every roll you will be rolling 2D6 + D*, depending on attributes, etc. against a fixed DC of 11. Rolling an 11 or better gets ...
6 votes
2 answers
505 views

Ironsworn meets BitD dice mechanic (with a twist)

I'd like to find the probabilities of a mechanic inspired mainly by Ironsworn. The basic premise is pretty simple and I have a working anydice program that gives me the right results but there's an ...
2 votes
3 answers
298 views

Anydice: for XdY(Z+), what are the odds to get the same numbers on all successful faces for 2 success, 3 success, 4 success

For a count success dice pool system, what is the anydice formula to show the probabilities that the rolled success are all the same number? example: 6d6(4+), what are the chance to have 2 success ...
7 votes
1 answer
936 views

Identify these dice with fists and half-black & half-white mask

I stumbled across this die the other day. The missing image of the 6th side is another double fist. Can anyone help me identify what game this is for?
6 votes
1 answer
1k views

Are players expected to perception roll every new room in an area?

Every room, cave, shop and location has a description the GM reads out. To access the full details availible, are perception checks required to be made constantly at the request of the party? I want ...
11 votes
3 answers
5k 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, ...
45 votes
7 answers
12k 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?

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