# 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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### Statistically, which is more of a severe penalty on a d20 roll, Disadvantage or a -10 penalty?

As a DM, I sometimes rule that a player can roll at Disadvantage or with a -10 penalty on a d20 roll. However, I've not been particularly consistent with this as I don't know what is a bigger ...
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### Help with counting successes with multiple target numbers

I was trying to do an analysis of counting successes using AnyDice, and the basic version of it I got without problems. However, the system I am trying to investigate uses a mix of target numbers for ...
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### 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 ...
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### 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 ...
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### 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 ...
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### 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 ...
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### 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/...
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### 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 ...
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### 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 ...
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### 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
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### 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 ...
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### 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 ...
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### 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 ...
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### 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 ...
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### 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, ...
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### 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
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### 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 ...
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### 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 ...
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### 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 ...
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### 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 ...
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### 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) '...
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### 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 ...
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### 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: ...
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### 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 ...
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### 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 ...
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### 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?
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### 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 ...
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### How to balance a one page RPG that has three scores? [closed]

I recently saw a great little one page RPG called Potatoes shared by Death by Badgers on twitter: Potato, a one page RPG about being a halfling and trying to quietly enjoy your potatoes in a world ...
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### 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 ...
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### 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 ...
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### 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 ...
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### 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 ...
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### Is there a single hundred-sided die for 2d10 (aka d10+d10) rolls, numbered 2–20?

Traditionally, 1d100 is rolled by rolling two d10s, with one of the dice used for the tens’ place and the other used for the ones’ place. But it is possible to buy a hundred-sided d100 die; they look ...
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### Determining dice pools for given percent chances of numbers of successes

The Question I'm working with my friend on a new (we think) dice system for a homebrew RPG (soon to hit the TTRPG world by storm, no doubt). A design goal is that players' statistical success rate at ...
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### Anydice: two-colored polyhedral dice pool

I trying to calculate probabilities for this dice mechanic, but I'm not sure that anydice can calculate that at all. The dice pool mechanic works like this: Players assemble a dice pool with green and ...
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### 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 ...
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### Adjust difficulty without affecting character's capacity, without adding steps to assess result, for a dice pool with unvariable target system

I'm searching for alternatives to adjust the difficulty for a count success system with a d6 or d10 dice pool, where characters' stats form the pool (ex: dext 3 + guile 3 = 6 dice pool). The ways I do ...
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### Anydice: for XdY(Z+), what are the odds for at least doubles in Z+?

For a dice pool of 6d6(4+), where any dice showing 4 or 5 or 6 is a success, what is the anydice formula to have the probability of at least a double among the 4+ dice? The goal is to know the chance ...
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### 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 ...
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### How can I compare the dice ranges for my game features to understand the minimums and maximums?

I have a lot of weapons on my own system and I want to split on four categories like, common, uncommon and stuff. I want to split them by how good these weapons perform damage wise. But I have ...
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### 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&...
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### What are the odds of rolling high all the time?

So, I have a suspicion that a player in an online game is... being creative in the way they call their dice rolls. I play with them in several games, and in 2 games I have convinced the DM to enforce ...
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### When did the change from "die" to "dee" occur? [duplicate]

When speaking about dice, some older gamers will say "die-6", compared to the more common (and seemingly younger) pronunciation of "dee-6". The only real points of reference I have ...
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### What are the probabilities of rolling doubles in a pool of d6s?

I am thinking of designing a ttrpg, and as a dice rolling system I was thinking of a system where players roll a pool of d6s. Any roll that results in multiples of the same number is a success, and is ...
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### What is a decent dice rolling strategy for partial/half advantage?

I understand that 5e is all about advantage and cancelling, etc. I understand advantage well, and the statistics. I was hoping there would be a commonly known dice rolling strategy with similar ...
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### How do I implement this specialized roll-and-keep mechanic in AnyDice?

I need help with an anydice function. I'm looking for a modified Roll and Keep type of mechanic, where if you have more dice that roll the max result than you are keeping, each discarded max result ...
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### Are There Alternatives to Dice Discussed in any D&D Literature?

On a family camping trip we found that we had left our dice on the kitchen table at home, and we have a family tradition of not using phones or other devices while camping. And yet D&D must be ...
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### How many dice fit in the sun?

In the itch.io description of Pidj's RPG "The Sun's Ransom", it describes the core mechanic, which relies on using the cover as a prop (emphasis added): Resolution is via a simple dice pool:...
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