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.

Filter by
Sorted by
Tagged with
11
votes
1answer
166 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 ...
19
votes
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
votes
11answers
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
votes
0answers
122 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 ...
7
votes
1answer
2k 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
votes
2answers
334 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
votes
2answers
77 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
votes
3answers
261 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
votes
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
votes
2answers
144 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
votes
1answer
138 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
votes
2answers
635 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
votes
2answers
653 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
votes
0answers
87 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 ...
27
votes
10answers
6k 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
votes
2answers
417 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
votes
0answers
102 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 ...
24
votes
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
vote
0answers
90 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
votes
6answers
11k 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 ...
34
votes
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
votes
1answer
745 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
votes
1answer
209 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
votes
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
votes
2answers
145 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,...
5
votes
1answer
286 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
votes
3answers
655 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: ...
11
votes
1answer
478 views

What brand and style is this D20?

I've had this one die for nearly 30 years, and I just started sorting and displaying my collection so I'm trying to find out which brand/style it is so I can hopefully complete the set someday. I ...
7
votes
1answer
186 views

How can I calculate the probability of meeting a certain Difficulty Value on 3d6 with critical success/failure modifiers?

In one Fuzion-system variant 3d6 is used to resolve skill checks. A Task is given a Difficulty Value (DV) from 10 (easy) to impossible (30 and beyond). Characters can have primary attribute levels ...
13
votes
3answers
5k views

What uses does D&D 5e have for a d100?

After many years I've finally got around to buying a couple of d100s, because I think they're great fun, and percentage die are for wimps ;-) I am also in the middle of a 5e campaign, and I wondered ...
2
votes
1answer
314 views

What is the name of the online dice roller that makes it less likely to roll the same number sequentially?

I'm searching for an online tool a friend used in an RPG once, no more than two years ago. The tool is a dice roller that adjusted the probabilities of an otherwise fair dice roll to make it less ...
10
votes
1answer
525 views

What game uses glitter-filled dice with an arrow-like symbol with bracket-like symbols either side of it?

Note for reviewers, this question is a part of several similar questions. It has been broken down so as to not run afoul of other guidelines. Whilst they are almost identical, they are not duplicates ...
11
votes
1answer
497 views

What game uses dice with cyborg skulls in place of the 1 symbol?

Note for reviewers, this question is a part of several similar questions. It has been broken down so as to not run afoul of other guidelines. Whilst they are almost identical, they are not duplicates ...
16
votes
1answer
1k views

What game uses dice with engraved faces, weapon symbols, double weapon symbols and object symbols?

Note for reviewers, this question is a part of several similar questions. It has been broken down so as to not run afoul of other guidelines. Whilst they are almost identical, they are not duplicates ...
15
votes
1answer
681 views

What game uses dice with compass point arrows, forbidden signs, explosions, arrows and targeting reticles?

Note for reviewers, this question is a part of several similar questions. It has been broken down so as to not run afoul of other guidelines. Whilst they are almost identical, they are not duplicates ...
23
votes
1answer
3k views

What game uses six-sided dice with symbols as well as numbers on the 5 and 6 faces and a blank space where “1” should be?

Note for reviewers, this question is a part of several similar questions. It has been broken down so as to not run afoul of other guidelines. Whilst they are almost identical, they are not duplicates ...
32
votes
14answers
15k views

How many sets of dice do I need for D&D?

I just started playing and am borrowing my friends' dice every time we play. I am looking to buy my own. How many sets do I need to buy?
20
votes
4answers
863 views

How do I calculate how many of an item I'll have in this inventory system?

I beta tested a game last week with a pretty fun system. This system is called "Dés d'usure" (in French, because it will be a French game). I translate it into "Wear dice", but I'm unsure. When you ...
9
votes
1answer
265 views

I would like to simulate a die from Anima: Beyond Fantasy in the Rolisteam dice roller on Discord. Can I do that, and if so, how?

As I'm sure anyone who has played it knows, Anima has interesting dice behaviors. Manually keeping track of them is kind of a pain in the neck, so I was wondering if there was a way to implement them ...
10
votes
1answer
481 views

Is this d15 verifiably fair?

Following off of a question asking for how to make a d150 in which this d15 was mentioned in an answer, I was wondering if the linked d15 is fair (gives an equal distribution of results over its range)...
20
votes
12answers
6k views

How I can I roll a number of non-digital dice to get a random number between 1 and 150?

This question is not actually related to RPGs but is more of a real-world dice rolling scenario I'm looking for help with, from dice rolling experts. I'm currently memorizing the Book of Psalms, ...
6
votes
2answers
573 views

What is the average point buy of a stat array from a 6x6 matrix of “roll 4d6, drop the lowest die”?

For character creation my group sometimes uses a weird method to generate stats. We roll 6 stat arrays using 4d6d1 (rolling 4d6 and dropping the lowest), and arrange them on top of one another to make ...
17
votes
6answers
5k views

Does the shape of a die affect the probability of a number being rolled?

Let's say I have a standard D4 and a custom D8 that has printed 1-4 and then 1-4 again (for a total of 8 sides). Would both of these dice distribute the probably of rolling any given number equally? ...
5
votes
1answer
228 views

Is it okay to suggest a dice roll as a player?

I was wondering if it could be okay in certain situations to ask for, or suggest, a test when I feel it makes sense to do so but the DM didn't ask me to roll a dice? To be more precise, I'll ...
54
votes
8answers
5k 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 ...
22
votes
6answers
6k 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 ...
21
votes
10answers
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
3k 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 ...
9
votes
2answers
1k 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 ...
25
votes
3answers
10k 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 ...

1
2 3 4 5