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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20
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0answers
465 views

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:...
15
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2answers
2k views

'Advantage' or 'Disadvantage' on damage rolls

I am looking at creating a few new categories of weapons just to add a bit more reason to spend money on mundane equipment in the early game. Poor, and Masterwork. My initial idea is that poor weapons ...
-6
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1answer
158 views

Do any 5e books specify the “correct” way to read percentile with 2d10? [duplicate]

I recently had a discussion with someone about d100, specifically the two ways of reading the slightly specialized pair of d10s typically used for the purpose. As context for anyone unaware, a normal ...
3
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2answers
274 views

Is it possible to make this die probability work?

My best friend and I are doing a thing for a d&d game that involves potentially destroying the universe. This event will occur rarely, but we want to make it show up randomly (because it’s a ...
2
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0answers
80 views

D10 alternative long diameter [closed]

Newbie here with one d10 dice related question. I am making some minis standees and I would like to use d10 dice to easily visualise health for each mini. The ones I have are of 18-20mm size (I ...
17
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1answer
3k views

How do dndbeyond.com's dice work?

The character sheets on www.dndbeyond.com have the option to roll checks and to roll specific dice on the web page. How do these 3D animated dice work? Do they generate a random number and the ...
-4
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1answer
239 views

What is the maximum amount of dice needed to play DnD [closed]

If I would like to be prepared to play any character build and roll any die only once. What is the maximum amount of dice that I would need to get. The highest I have heard so far would be 144 d6 (...
12
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4answers
4k views

Is this Homebrew Advantage rule broken?

I know about this suggestion. Mine is an even further extension of that, and I'm asking about whether there are any further issues and whether I've fixed Lucky. I find the way 5e handles multiple ...
4
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4answers
3k views

Can a Circle of the Stars Druid roll a natural d3 (or other odd-sided die) to bias their Cosmic Omen roll?

The sixth level Circle of the Stars feature, Cosmic Omen, allows the druid to, for the remainder of a day, use their reaction to either help their allies or hinder their foes: Whenever you finish a ...
2
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1answer
122 views

How can I write a formula for this houseruled roll in AnyDice?

So here it goes: The roll is a pool of dice of d6s, d8s, and d10s. The minimum dice pool is 1d6 and the maximum dice pool is 10 dice. It could be 2d6 + 2d8 + 1d10, for example. Rolling 5+ is a ...
2
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1answer
110 views

Calculating Modified V5 Dice Probabilities with AnyDice

My game uses 5th edition rules with a house rule where 1s subtract successes and 10s count as two successes. 2s through 5s count as no successes and 6s through 9s count as single successes as normal. ...
6
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1answer
173 views

How to count the number of successes in a very large dice pool more easily?

What is a good way to roll a large number of dice and count how many of them "succeed" (i.e. meet or exceed a set target number)? I'm playing a game called Aberrant that uses the Storyteller ...
34
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2answers
4k views

What does dice notation like “1d-4” or “1d-2” mean?

I'm trying to adapt GURPS 4th edition's system creation system into a Python script and I'm trying to understand the dice notation. In particular: Roll 1d-4 (minimum 0) to determine the number of ...
12
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1answer
1k views

What are the objective issues with dice sharing?

Tasha’s Cauldron of Everything, page 141 says the following (emphasis mine): Common in-game limits include - but are not limited to - [...] Common out-of-game limits include unwanted physical contact,...
14
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3answers
5k views

When aiming to roll for a 50/50, does the die size matter?

I noticed how D&D 5e's Hexblade Warlock subclass feature Armor of Hexes imposes a chance to miss regardless of the attacker's roll. That chance is based on a d6: if it's a 4 or higher it misses, ...
3
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1answer
115 views

What dice are used for the Adult Oblex's Eat Memories?

The relevant portion of the creatures stat block: Eat Memories. [...] While memory drained, the target must roll a d4 and subtract the number rolled from any ability check or attack roll it makes. ...
5
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1answer
510 views

What Counts as a Damage Modifier?

I was posting a homebrew/houserule here for critique (found here: Two-Weapon Fighting Mechanic Alterations ) and a point of confusion that came up was what exactly 5e counted as a damage modifier. The ...
2
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1answer
66 views

How to count near duplicates in a mixed pool using AnyDice?

Following on from this question: How to count duplicates in a mixed pool using AnyDice? I'm also interested in the much harder question of using AnyDice to look at how much easier some dice mitigation ...
5
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2answers
262 views

How to count duplicates in a mixed pool using AnyDice?

The following question provides a function that answers the question for a single kind of die; How do I count the number of duplicates in anydice? I want to count how many duplicates there are in a ...
3
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3answers
150 views

Opposing d6 Pools, # of higher dice

I've read dozens of posts here, and wrestled with with anyDice suggested code, but nothing matches quite what I am looking for. I think it is simple in concept: for opposing dice pools of 1..6d6, I ...
10
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2answers
985 views

Dice rolling mechanic where modifiers have a predictable and consistent effect on difficulty

I am looking for a dice rolling mechanic that makes it such that increasing or decreasing a modifier on the roll has a constant multiplier effect on the probability of the outcome. Say you have to ...
7
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1answer
244 views

Is there an easy formula for multiple saving throws?

My issue: I am playing a druid and if I do something like summon 8 wolves I can end up forcing the DM into 8 saving throws each turn. I mitigate this on my end with an app to roll lots of dice, I pre-...
31
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1answer
3k views

Help me identify these 20-sided dice with assorted numbers from 4 to 72

I have these dice. I don't know where they came from or how I got them, and I can't imagine what they are for. They are 20-sided dice but the numbers on the sides are bananas. See image Numbers on ...
11
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1answer
247 views

How to create dice rolls for multi-attacks in a custom tabletop RPG system

I'm working on a simple tabletop RPG based in a sci-fi universe. The rule set is very basic, since I'll be playing with players with little experience and general tabletop know-how. Most of it appears ...
20
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2answers
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, e.g., 'd20' as "dee-twenty", or '3d6' as "three dee-six". But a ...
26
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12answers
5k views

What is the ideal way of emulating a full dice set using a single d20?

Imagine you are trapped in a post-apocalyptic world and only have a single d20 at your disposal, nothing else whatsoever. What is the ideal way of emulating all other common dice types (d4, d6, d8, ...
3
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0answers
125 views

What Happens When You Have Multiple Unarmed Strike Dice? [duplicate]

So, while flipping through the PHB, I've noticed that in 5th edition, multiple abilities can give you a buff on your unarmed strike, such as a monk's Martial Arts ability, the Tavern Brawler feat or ...
8
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1answer
4k views

Did D&D 5e ever use a d3 prior to Tasha's Cauldron of Everything?

The Path of Wild Magic Barbarian recently released in the preview for Tasha's Cauldron of Everything has the unusual design choice of requiring a d3 roll for Bolstering Magic. Needless to say, it's ...
12
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2answers
410 views

How can I ensure my dice roll fairly if they appear to have a bias?

I have purchased several sets of dice from different online retailers. I did some salt-float tests on them recently and I'm concerned a good amount of my d20s are favoring a specific corner (all 3 ...
3
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2answers
119 views

What target numbers would be a certain level of difficulty under this system?

I’m writing a homebrew game system, and I found that I have an action resolution mechanic but not a good system for target numbers (I call them Success Thresholds, or STs, in this game, and from now ...
4
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3answers
370 views

Which modifier added to a 1D20 has the closest outcome probability as rolling 2D20 with advantage with no modifier? [closed]

I'm trying to determine the probability of every modifier to a 1D20: 1D20 +1 1D20 +2 1D20 +3 1D20 +4 1D20 +5 vs flat 2D20s with advantage ...
15
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5answers
6k views

A player rolls several 20-sided dice, takes the lowest value, ignores the rest. What is the probability of this value being at least 7?

I'm designing a tabletop game, and I need to figure out how to calculate a few probabilities: Roll 3 20-sided dice, take the highest value. What is the probability of it being 7 or higher? 15 or ...
-2
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2answers
380 views

All the different mechanics that offer rerolls/replacement results [closed]

Can we get an exhaustive list of ways to reroll, or change the result of, a die? I'm currently only concerned with yourself or your allies rolls.
6
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1answer
185 views

Optimal algorithm for building raises in 7th Sea?

I'm writing a Discord bot for an online 7th Sea campaign. Players will type something like roll finesse 4 + weaponry 3 + 1 and the bot will spit out something like 3 raises (9+2, 8+3, 6+4, ...
28
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2answers
717 views

What game uses yellow 20-sided dice with letters and arrows?

Full disclosure: These are from my own online store (see my profile.) I've sold a small number of them over the years to dice collectors, but I don't know why anyone would want them or what they are ...
6
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2answers
1k views

How can I calculate the distribution of “Roll 3D6, reroll any dice once, treat all 1's as a 2” in AnyDice?

I'm wondering how to use Anydice to calculate the following: Roll 3d6, treating all 1's as 2's, you may reroll each die once, so we do this if the roll is below the average. So 3d6, can reroll each ...
3
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0answers
110 views

Resources on dice rolling for Rolisteam

Where can I find reliable instructions as to how dice rolling programming works with Rolisteam specifically (I use 1.8.2)? All I can find is about DiceParser (which seems to be the base code used in ...
28
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11answers
7k views

Is it possible to emulate common polyhedral dice rolls using just a d6, and if so, how?

This is a question that I've asked myself numerous times, but I've never gotten a really satisfying result. The issue is this: let's assume we only have one or multiple d6 dice (arguably the most ...
7
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2answers
588 views

Is probability of succeeding an opposed check the same when the second check is passive?

An "opposed check" is a well-known kind of check in many games, when two opponents roll dice, add modifier and compare results. It differs from a convenient dice roll when you compare your result ...
2
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0answers
260 views

How do attack rolls and criticals affect a 2d6 vs 1d12 damage roll? [duplicate]

For example, given the probability distribution between two similar weapons: D&D 5E Weapons - Basic Rules pg.48: Damage Discrete Distribution - AnyDice: Its evident that Greatsword is more ...
25
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8answers
3k views

How to approximate decaying probability distributions with few dice?

I am looking for ways to generate a probability distribution using dice which produces results that are skewed towards lower numbers, ideally as some kind of smooth decay. For example, imagine a ...
1
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0answers
124 views

What is the odds of rolling specific numbers on 4 d20s? [closed]

If I roll 1d20, then 1d20, then 1d20, then 1d20 (effectively 4d20), what are the odds that I'll roll specific numbers? For example, all 20's, or a combination of numbers such as (1, 16, 16, 1)?
28
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6answers
14k 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 ...
38
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24answers
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 ...
4
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1answer
1k views

Fantasy Grounds - How to repeat a dice roll of 4d6 drop lowest

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 ...
4
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1answer
297 views

Has anyone done research on average RPG probabilities?

I've been looking at designing an RPG system lately and I'm currently considering where to set the "difficulty" of a roll at to get some satisfying results. I'm wondering - has anyone researched some ...
5
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5answers
1k views

I have a player that rolls TOO well. Is this a problem and how can I help it? [closed]

I have been running a home D&D game for the past year now with the party consisting of 5 players; a monk, a paladin, a ranger, a wizard and a druid. The Ranger was the last person to join the game ...
2
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2answers
199 views

What homebrew dice mechanic can I use for PvP in Amazing Tales?

I've recently started playing Amazing Tales with my children. As a summary of basically all the mechanics of the game (it's pretty simple since it's targeting children), each character has four skills,...
6
votes
1answer
518 views

How would this House Rule for combined Advantage/Disadvantage Impact Rolls?

According to the rules for Advantage/Disadvantage: If circumstances cause a roll to have both advantage and disadvantage, you are considered to have neither of them, and you roll one d20. This ...
10
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3answers
663 views

Is there a way, other than having a Diviner friend, for a player to avoid rolling Initiative at the start of a combat?

I've been starting to theorize the following concept: a player who would... never... roll dice... ever. Not in combat, not elsewhere. No dice. Literally. But I have come across a major obstacle: ...

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