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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1k views

Dice results hidden from the players? [duplicate]

Does it make any sense to specifically hide the results of a player's dice roll from the said player? This method is based on my assumption that many actions do not immediately reveal themselves as ...
2k views

Is one Proficiency die better than two Ability dice?

My GM often allows me and the other players to roll one skill or another for various checks (Coordination or Athletics is a common option; the character either balances across an obstacle or bypasses ...
2k views

Is there a subtle mathematical difference between increasing the target number and adding detrimental modifiers?

Modifying difficulty works in various ways within and between various roleplaying systems. But generally speaking, it seems added difficulty either modifies the target number (altering the check) or ...
5k views

What is the correct term for the die with multiples of ten written on it?

What is the correct term for this die? It is a standard die in any 7 dice set. It has multiples of ten from 10 to 00 written on it (10, 20, 30, 40, 50, 60, 70, 80, 90, (1)00). I seem to think that ...
677 views

How do you roll dice in space? [closed]

Let's imagine you get to go to International Space Station and you like to roll dice. But they don't stop flying around the station because you're in space where gravity is not high enough. How can ...
39k views

Why does a d10 count from 0 to 9?

I have recently purchased (in Poland, if that matters) a set of dice, from d6 to d20. I'm a complete newbie (if not ignorant) to RPG in general, dice, and this sort of technical stuff in practical, ...
1k views

What is the meaning of the term "natural 20"?

In Dungeons & Dragons, does "natural 20" mean rolling 20 on a single roll as opposed to a composite 20 from multiple dice? Or does it refer to something else?
19k views

Natural 20 when rolling with disadvantage

If you are rolling with disadvantage and roll a natural 20 on one of those rolls, which die roll do you take? My question stems from the fact that natural 20s count as critical regardless of ...
340 views

DMing without any resources: Is this DND anymore? [closed]

I have a DM who doesn't use a map or minis, rarely uses our stats, and usually only uses rolls. Sometimes he uses a book. Most of the time he's really only telling a story, and we're telling it with ...
58k views

How can I test whether a die is fair?

I have a d20 that seems to be, well, remarkably lucky.* How can I determine whether it's really just luck, or whether the die is in fact unfairly biased? *) Well, I don't, really. This is actually ...
130 views

Is there any other way to determine result than throwing dice? [duplicate]

I know that you can go full narrative and not use dice at all, but that's not what I'm asking about. I want to know any other (pseudo)random way to determine the result of action? My friend suggested ...
6k views

Can I randomly determine the outcome of an event with 5 outcomes with a d6?

Could I use a d6 to find which event would happen given there were 5 events, lets say named A, B, C, D, and E? I am thinking that for 1–5, you could have the events assigned to their respective ...
7k views

When to roll during spellcasting? [closed]

I have played a few games of D&D with my equally as inexperienced friends and there are some uncertainties we have about spells that I would like to clarify before I take my turn to DM. When ...
2k views

What colors were the polyhedral dice in Red Box D&D? [closed]

My first Dungeons and Dragons set was in a red box (purchased around 1989 plus or minus a couple of years). The dice that came with it were of multiple colors, some of which I cannot remember. From ...
343 views

Improving "fumbles" when using pools of d10s in TROS

The original rules in TROS use varying pools of d10s to attempt rolling one or more successes against a varying Target Number (e.g., commonly a TN=7). Roll the pool of dice, count up the successes ...
7k views

Should I bring any extra dice for 5e?

I will be playing my first 5e session here soon. I got to skim the basic rules PDF, so I know that it plays a bit like 3.5 with some modernization. (Please don't stone me if I'm oversimplifying that.) ...
40k views

Is the Saltwater Float represented in this question a good way to test for loaded dice?

Recently a question has popped up in the comments of another question I've recently answered where a player has happened to roll three 18s and other high stats at a table with his dice, which could ...
553 views

Help calculating opposing dice pool in AnyDice

I need to calculate the probability of A winning against B. Both A and B throw 1-15 d6s, the one with more successful dice (SD) wins. There are actually 5 possibles outcomes: ...
1k views

Concerns about a dice-pool system [closed]

I'm writing "yet another rpg system" and I'm choosing a way to determine success. I'd like a dice pool mechanic, and I've come up with this. PCs have characteristics and abilities. Char. Mods will ...
2k views

Are there any good online dicerollers similar to the now mostly defunct Invisible Castle? [closed]

I used to use Invisible Castle's roller which was based off of OpenRPG. Worked great, but it looks like the site has been pretty much gutted and is mostly defunct. The roller still works but I'm not ...
212 views

Too few dice to move around in a game were their position on the "character" sheet is relevant

Apart from it being an everyone-for-himself game, one of the most dreaded things about Blood Red Sands is the sheer number of dice needed: Total Dice Needed for a full game of 5 players: 25d10, ...
777 views

Calculating 6D6 similar to poker dice [closed]

I keep coming back to the idea of building a game system around a 6D6 roll, taking matching sets of numbers and 'straights' as measures of effect. This guarantees that something always turns up (as ...
2k views

How to model a dice pool with re-rolls mechanic? [closed]

I have a dice mechanic where players roll a number of D10s and have a different number of re-rolls they can use to maximize the total. For example: The player has 3D10 and 2 re-rolls. They roll 9,6,3 ...
84k views

How do I read 2d10 as a percentage?

I own 2 d10 dice with differently numbered sides (0 through 9, and 00 through 90), although the same applies for two identical 'regular' d10 dice. How do I read the percentage value if I use both ...
4k views

Help Writing an AnyDice Function for a Weird Dice Mechanic

I've thought of a dice mechanic that I'd like to test the numbers for, but it's complicated enough that I don't know how to model it in AnyDice. It's sort of a modified dice pool, where the successes ...
21k views

Can I substitute a d3 with a d6?

I don't have a lot of dice yet, just a basic set of polyhedral dice: 1d4 1d6 1d8 2d10 1d12 1d20 Sometimes an ability or save calls for a die that I don't have. Strike, Unarmed [...] ...
401 views

What tools can I use to keep track of dice in Dogs in the Vineyard played over Skype? [closed]

My group is distributed across the globe, so we have to do all of our roleplaying online. We have a few different die-roller options that we use. However, none of them seem very well-suited to Dogs in ...
224 views

How does one drop lowest and reroll ones/lowest in the context of multiple sides of dice? [closed]

I am making a dice rolling app and am trying to implement dice roll features. I want my features to apply to any game. Are there other common functions in addition to the ones I have mentioned? Here ...
257 views

Is there a paper/manuscript explaining the theory behind AnyDice? [closed]

I am using the AnyDice website to calculate probabilities on any number of dice with any arbitrary number of sides. May I please have a link to a formal discussion of this very elegant subject?
9k views

Dealing with large amount of dice rolls for a single damage roll without making it drag on

There are a number of spells and abilities that involve large amounts of dice rolling. For example, a high level rogue can have up to 10d6 in Sneak Attack, and a high level Wizard can have a ...
653 views

What is the paper/pen/dice case used in the PAX Prime 2014 game?

I was looking the PAX Prime 2014 game and couldn't help but notice the nice looking cases they have: in the upper portion you can store your character sheet / books, and at the bottom there's a ...
3k views

How can I execute code depending on a die value in AnyDice?

I'd like to be able to have a conditional test the value of a die or set of dice. Here's a simple example using a d6, but I'm looking for a way to check values of arbitrary dice sets. ...
1k views

What is the average roll of a die with an expanded explosion threshold as compared to one with an expanded success threshold?

This is going to be a bit of a weird question, but I'm figuring dice pool probabilities for a homebrew system and I want to know how certain abilities should be priced regarding their use. The basic ...
2k views

Help Calculating Dice Odds for a Unique d6 Dice Pool

I'm attempting to design a unique d6 dice pool system, and I want to try programming the probabilities in AnyDice but I'm not sure how. Here's how the system works: Dice pools are between 2 and 10 ...
2k views

Dice roll methods and their averages

So, to build some background I am trying to help my DM build a fair Dice roll methods for character generation according to tiers of classes. Ex. Giving weaker classes more stat points although ...
5k views

How do I approach the probability of a d100, using 2 d100's?

We're running an almost 100% homebrew system, which uses skills in order to craft objects during play. Allow me to first formulate an example to explain my question better: Jack is quite the mason ...
2k views

Dice pool success probability with one exploding die

I'm looking for the math behind the following: Players have a pool of 3–11 d6s, and have to get from 1–4 successes, "success" being a roll of 5+. One of these dice is special (represented ...
485 views

Can you roll a dice pool or multiple dice rolls with only one die?

Say I'm playing Vampire: The Requiem and I need to roll 5 d10's. Can I roll a d10 5 times instead of having 5 d10's? Can I split it up if I must, so if I only had 4 d10's could I roll the 4, then roll ...
743 views

What's the probability of getting three matching faces in any one roll of four Fudge dice?

I'm having a little difficulty recalling the procedure for calculating probability of dice results. My question is, using 4 Fudge d6 dice, what is the probability of getting three of any result in one ...
8k views

Supporting degrees of success and failure when rolling

I have only played D&D so far, but I'm not that happy with it, mainly because the results are so binary. Take, for example, picking a lock. You roll a dice, you add your lockpicking modifier and ...
345 views

Fudge Dice Augmentation

I'm looking into unique stunts that affect dice rolls in gameplay. Are there any rules or precedent on the use of more than 4 Fudge dice in rolls, or using a die to determine outcomes? I'm thinking of ...
3k views

How to deal with players rolling dice before establishing the context of the action?

I've been running a lot of fate and cthulhu-dark games lately, and I've run into a common challenge with several players: They'll roll the dice before we establish what kind of action they're taking ...
11k views

Cheat-proof online die roller? [closed]

I am looking for an online die roller that works similarly to the following: The GM provides a string identifier to the player. E.g., "gandalf attacks balrog #12" The player enters the id on the ...
7k views

Are d8, 10, 12, etc. dice, fair dice?

Given a perfectly formed d8, or d10 or any d dice in Dungeons & Dragons (D&D), are they all fair dice? Is it equally possible to roll any number on any given dice? I am writing a text based, ...
907 views

Probabilities using 3d10 as 1d1000 [duplicate]

I'm trying to use anydice to figure out the probabilities of the various values of 1d1000 rolled on 3d10. I want to know stuff like "what's the chance of rolling 900 or higher? How about 950 or ...
3k views

Why all the dice? [closed]

I'm asking more as an outside observer, and not with anyone who has any grievance with how games are played, nor am I judging or criticizing anything. I've just always wondered, why use all the ...
2k views

How do I calculate dice probability in the A Song of Ice and Fire system?

Say I need a net hit of 20 or higher. I get to roll 5d6 base, but I get a bonus dice roll of +3. I only get to keep the 5 highest so I would be rolling "8d6 drop lowest 3 rolls" I want to know what ...
2k views

How do I use AnyDice with Classic World of Darkness / 20th Anniversary?

How can I take advantage of AnyDice with 20th Anniversary rules? I'm new to AnyDice but very interested in using it. I would like a wrapper function that accepts the following params. the number of ...