d20
Tabletop gaming staple
A d20 is a twenty-sided die, the iconic randomizer of tabletop role-playing games like Dungeons & Dragons.
Each face shows a number from 1 to 20, making it ideal for systems where outcomes depend on rolling against difficulty thresholds.
The notation follows the pattern d4, d6, d8, d10, d12—the number after "d" indicates the die's sides.
Roll a d20 to see if you hit.
Marked cubes for chance
- polyhedralHaving multiple flat faces
- tabletopHorizontal furniture surface
- rollList of names
- criticalExpressing disapproval or importance
natural twenty · fumble · modifier · check · saving throw · attack roll · damage · advantage
Fantasy roleplaying game system
- D&DFantasy tabletop roleplaying game
- dungeon masterTabletop RPG narrator
- player characterUser-controlled game persona
- campaignOrganized effort toward goal
adventure · encounter · combat · rulebook · character sheet · game master · homebrew · one-shot
Bonus damage on lucky strike
- memeShared online humor
- tattooPermanent dermal design
- pendantSuspended jewelry ornament
- collectibleObject worth amassing
metal dice · lucky dice · unlucky · superstition · blowing on dice · dice set · hoard · collection
dice
Marked cubes for chance
- polyhedralHaving multiple flat faces
- tabletopHorizontal furniture surface
- rollList of names
critical · natural twenty · fumble · modifier · check · saving throw · attack roll · damage · advantage · disadvantage
Dungeons and Dragons
Fantasy roleplaying game system
- D&DFantasy tabletop roleplaying game
- dungeon masterTabletop RPG narrator
- player characterUser-controlled game persona
campaign · adventure · encounter · combat · rulebook · character sheet · game master · homebrew · one-shot · session
critical hit
Bonus damage on lucky strike
collectible · metal dice · lucky dice · unlucky · superstition · blowing on dice · dice set · hoard · collection
- 3D shapescube, sphere, cone, cylinder, pyramid
- dicedice, d6, d10, roll, pips
- tabletop RPGsD&D, sourcebook, dungeon master, game master, DM
Produces unpredictable numerical outputs
RNG · card draw · spinner · deterministic · player choice