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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1 answer
463 views

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 ...
13 votes
7 answers
3k views

Rerolling or taking +2

In Fate Core, the game rules for skill resolution involve rolling four six sided dice, and counting faces 1,2 as -1, face 3,4 as 0, faces 5,6 as +1. You then sum up the resulting numbers and add a ...
3 votes
3 answers
192 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
193 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 ...
12 votes
9 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 ...
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10 votes
3 answers
357 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 ...
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5 votes
1 answer
2k views

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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2 votes
1 answer
85 views

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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5 votes
2 answers
625 views

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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2 votes
3 answers
199 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 ...
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7 votes
2 answers
207 views

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 ...
2 votes
1 answer
155 views

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 ...
5 votes
3 answers
112 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 ...
5 votes
3 answers
232 views

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 ...
8 votes
3 answers
632 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&...
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24 votes
7 answers
5k views

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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6 votes
0 answers
130 views

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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2 votes
4 answers
385 views

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 ...
25 votes
6 answers
3k views

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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11 votes
4 answers
1k views

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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13 votes
2 answers
845 views

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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23 votes
1 answer
916 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:...
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16 votes
2 answers
3k 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 ...
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-6 votes
1 answer
282 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 votes
2 answers
403 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 votes
0 answers
101 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 ...
19 votes
1 answer
5k 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 ...
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-4 votes
1 answer
494 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 (...
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14 votes
4 answers
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 ...
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4 votes
4 answers
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 ...
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2 votes
1 answer
352 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 votes
1 answer
192 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 votes
1 answer
266 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 votes
2 answers
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 ...
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12 votes
1 answer
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 votes
3 answers
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, ...
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3 votes
1 answer
411 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 votes
1 answer
1k 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 ...
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2 votes
1 answer
114 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 ...
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5 votes
2 answers
367 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 ...
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4 votes
3 answers
285 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 ...
11 votes
3 answers
1k 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 votes
1 answer
391 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-...
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31 votes
1 answer
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 ...
  • 501
11 votes
1 answer
344 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 ...
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26 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, e.g., 'd20' as "dee-twenty", or '3d6' as "three dee-six". But a ...
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26 votes
12 answers
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, ...
  • 371
3 votes
0 answers
142 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 votes
1 answer
7k 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 ...
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12 votes
2 answers
512 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 ...

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