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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26
votes
5answers
10k 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 ...
33
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
96 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
164 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
80 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
222 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
631 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
439 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
147 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
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3answers
4k 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
270 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 ...
8
votes
1answer
475 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 ...
10
votes
1answer
459 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 ...
14
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 ...
14
votes
1answer
642 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 ...
22
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
9k 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
840 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
205 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
447 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
13answers
5k 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
364 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 ...
18
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
219 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 ...
53
votes
8answers
4k 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
5k 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 ...
18
votes
9answers
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
768 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 ...
22
votes
3answers
5k 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 ...
6
votes
2answers
513 views

How can I set up a Roll20 macro to roll certain additional dice depending on the results of an initial die roll?

I am playing a wonderful homebrew campaign running D&D 5E via Roll20 (I have a Basic account), and I have just rerolled as a wizard. One of my spells, prismatic spray, requires that I roll 1d8 for ...
4
votes
2answers
98 views

How do I use the encounter chance tables in the AD&D 1e DMG?

I'm trying to set up a campaign and I'm not great at math. We play old school 1e AD&D. The 1e DMG gives two tables on page 47 for chance of an encounter. The base chance of encounter depending on ...
20
votes
6answers
3k views

How do I determine the probability of rolling various ranges of numbers on 4d10, 5d10, etc.?

After realizing that my knowledge of how probabilities function has waned significantly, I'm wondering what the probability of rolling multiple 6's or higher (6-10) on four 10-sided dice, five 10-...
5
votes
1answer
210 views

Chances to roll a number of results greater than 5 on a number of d10s

I'm trying to figure out how to implement a dice roller function. I would like to know the chance in % to get [1 to X] results of 6+ on [1 to 10] 10-sided dice. So, for example, I would like to know ...
7
votes
4answers
2k views

What counts as the lowest value on a percentile die? [closed]

If I'm making an image with a standard set of seven dice, all showing as having rolled the lowest possible result, I obviously want to have that be 1 for six of them, but what should I use for the ...
4
votes
3answers
1k views

In AnyDice, how can I calculate the number of successes in the highest dice in a given dice pool?

I've tried the following code output [count {5..6} in [highest 2 of 10d6]] Which yields 0: 99.90% 1: 0.10% However, these ...
3
votes
0answers
87 views

Plans or Blueprints for a game table [closed]

I have been gaming for many years, and now that I have a dedicated room to keep all my gaming stuff, I would like to build a table. So far we have been using a plain dining room table. Has anyone ...
3
votes
1answer
893 views

Is there a way to turn off default crit damage rolls in roll20?

I have a crit table I use for random crit events. The table is recursive and triggers whenever a 20 is rolled, but the default programming in Roll20 also rolls the additional damage roll that's built ...
88
votes
5answers
15k views

Rolling a D10 (0-9) for hitpoints. What do I get with a zero?

My character leveled up and I rolled a D10 to determine the rise in hitpoints. The dice that I used goes from 0 to 9 and I rolled a zero. The DM told me that this means I only add my modifier (0 + 3 = ...
26
votes
6answers
17k views

Are these two methods of handling Elven Accuracy “Double Advantage” mathematically equivalent?

For context, part of the Elven Accuracy feat (Xanathar's Guide to Everything, p. 74) states: Whenever you have advantage on an attack roll using Dexterity, Intelligence, Wisdom, or Charisma, you ...
3
votes
1answer
1k views

How to check if a dice set is correctly weighted? [duplicate]

So let me give you a bit of backstory, I went to a friend's place to play DnD and I decided to put my solar powered dice to charge on top of my friend's standing lamp with the plastic box practically ...
31
votes
4answers
8k views

Is there a name for this 20 sided die with two 1s, two 2s, etc?

Purchased this die from a hobby/tabletop store yesterday, mainly because I thought it looked cool, and that it was funny that it was so hard to read the faces: I was passively rolling the die, and ...
2
votes
1answer
628 views

I need a dice system with a unique behavior and rate of growth (preferably in ANYDICE to verify) [closed]

I am looking for a defense system where the probability of hitting is proportional to the inverse of a quadratic polynomial with respect to defense. I don't care about attack scaling yet. If you ...
29
votes
2answers
3k 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 ...
11
votes
3answers
496 views

Probability of a d10 matching any faces on another Nd10

I am trying to figure out the probability for one separate d10 to have a matching face with a pool of d10 comprised by up to 5 other d10s. So just to make myself clear, the player rolls 5 d10s and a ...
0
votes
2answers
148 views

Dice Rolls for PBEMs [closed]

Is there an online dice roller that has some kind of confirmation mechanism so it can be used by forum/PBEM games? For example? Bob: "I kick open the door" MC: Roll here [gives link] Bob: [...
11
votes
3answers
2k views

Are there 12-sided d4 dice? [closed]

I don't particularly like D4 dice since they can't roll well, so I was thinking about using a D12 since mathematically, if you do modulo 4 + 1 you should still have an even distribution among the ...
5
votes
2answers
1k 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, ...
4
votes
1answer
764 views

If the saltwater float can (with difficulty) be used to determine a dies balance, would a more dense liquid such as galium be better at doing so? [closed]

In another question I asked if the Saltwater float present in a specific youtube video was capable of determining any differences in mass between the faces of a die in determining the balance of a ...