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, online D&D engine that would allow a DM to create their own world and invite their friends to play that world online. I am writing a cryptographically secure random number generator to roll the dice, but knowing nothing about D&D, I don’t know if all the dice are fair.

In Werewolf W20, how does dice splitting work with no-roll Gift activation?

If I have a Gift that says, "spend a point of Gnosis: stuff happens", can I use this Gift while performing a normal action in the same turn ? If so, how would dice splitting work in this case — since the Gift does not require a die roll ?

For a more concrete example, can I activate Hands full of Thunder (spend 1 Gnosis: infinite ammo for the rest of the scene) and fire my gun in the same turn ?

Inspiration Dice in D&D 5e [duplicate]

I use a milestone progression so relative PC power levels are equal and differentiate by giving out inspiration to for good RP, creative problem solving, and heroic actions.

Is it balanced to allow PC’s to bank their earned inspiration dice to purchase upgrades to their characters for "X" number of Inspiration Dice? I’m thinking a skill/tool proficiency, feat, spell slot, etc..?

D&D 5e inspiration dice as currency for PCs to improve their characters? [closed]

Has anyone heard of, or thought out, or even used D&D 5e inspiration dice as currency for PCs to improve their characters? I allow PCs to accumulate them, so it occurred to me, "why not let them buy a skill, feat, spell slot, etc… for ‘x’ number of I-Dice? Thoughts? Possible costs in I-Dice for each?"

How many dice does the GM roll when challenging the players?

I’d like to run a game of Roll for Shoes, but I’m not sure how many dice I roll when the characters face various challenges.

I’m under the impression that it’s supposed to be the same number of dice the character uses, but that seems to make impossible tasks far too easy to perform.

Is there a general rule saying how many dice the GM rolls against a character’s attempt at a given task? Should the GM’s dice equal the character’s dice, or should the GM’s dice vary depending on the task’s difficulty?

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.

I’d like to compare the specific probability ranges to V5’s normal rules. What function can I use to do so over AnyDice?

Does a Duergar Spy’s Enlarge action double its damage dice from its Sneak Attack trait?

In the module The Forge of Fury (tiny spoiler) there is a Duergar Spy creature. Its statblock is on p. 234 of Tales from the Yawning Portal.

I am interested in the way two of its features interact with each other, Enlarge and Sneak Attack. If the Spy qualifies for a Sneak Attack while Enlarged, are the damage dice added from the sneak attack doubled?

The duergar spy’s Enlarge action says:

For 1 minute, the spy magically increases in size […] While enlarged, the spy is Large, doubles her damage dice on Strength-based weapon attacks, and makes Strength checks and saving throws with advantage.

Its Sneak Attack trait says:

Once per turn, the spy can deal an extra 7 (2d6) damage when it hits a target with a weapon attack and has advantage on the attack roll, or when the target is within 5 feet of an ally that isn’t incapacitated and the spy doesn’t have disadvantage on the attack roll.

The spy has a Shortsword attack. A Shortsword is normally a finesse weapon, meaning one can use either Str or Dex for to hit and damage. The stat block suggests the Spy uses Dex, but explicitly applies Enlarge to it (the spy has a Str mod of +0 and a Dex mod of +3).

Shortsword. Melee Weapon Attack: +5 to hit. Hit: 6 (1d6+3) piercing damage, or 10 (2d6+3) while enlarged.

Does increasing the dice pool make messy criticals more likely?

I just read the mechanics for dice rolling in Vampire: the Masquerade 5th edition and something is bothering me. It seems to me that the larger your dicepool is, the more likely it is to get a messy critical.

Just in case somebody wants to answer without knowing the rules, here is a very brief rundown:

A character rolls a number of d10s called a dicepool. For the vast majority of rolls, at least one of those dice would be a hunger die. Let’s just assume it’s a single one for simplicity. If at least two dice come up as 10s, that’s considered a critical. If at least one of those 10s is on a hunger die, then it’s a messy critical where the character succeeds spectacularly but in the most direct and brutal way possible. Picking a lock with a messy critical can lead to the character ripping the door off the hinges – grants passage but it’s not subtle.

These are the relevant rules here. It seems to me that the larger the dicepool is, the more of a chance for a messy critical. My intuition is the following:

  • with a dicepool of 3, if the hunger die comes up at 10, then you have 2 chances to roll a 10 on the other dice.
  • with a dicepool of 7, if the hunger die comes up at 10, then you have 6 chances to roll a 10 on the other dice.

Is my intuition here correct? Is a master at picking locks would be more likely to let the Beast do his job than somebody who’s just average at locks? I am not sure how to properly calculate the odds of messy criticals.

Examples of dice pool games

Due to lack of a better term, I am looking for examples of games with dice pools that function like the one from 5th edition d&d beta instead of ones like The One Ring, Genesys, Star Wars, Legend of the Five Rings, and so on.

To illustrate what the difference between the above examples and what I am seeking:

The above games have attributes which give you a number of dice in which to use for given tasks

Compared to the 5th beta

where you had one dice pool that refreshed each round, and you could extract dice for an attack roll, better damage, or to increase your AC.

Since I never got to play the 5th beta, I could be misremembering details, but I should have the gist of it correct.