A gamemaster (GM; also known as game master, game manager, game moderator, referee, storyteller, or master of ceremonies) is a person who acts as a facilitator, organizer, officiant regarding rules, arbitrator, and moderator for a multiplayer
role-playing game
A role-playing game (sometimes spelled roleplaying game, or abbreviated as RPG) is a game in which players assume the roles of player character, characters in a fictional Setting (narrative), setting. Players take responsibility for acting out ...
. The act performed by a gamemaster is sometimes referred to as "gamemastering" or simply "GM-ing."
The role of a GM in a traditional
tabletop role-playing game
A tabletop role-playing game (TTRPG or TRPG), also known as a pen-and-paper role-playing game, is a kind of role-playing game (RPG) in which the participants describe their characters' actions through speech and sometimes movements. Participants d ...
(TTRPG) is to weave together the other participants'
player-characters' (PCs) stories, control the
non-player characters (NPCs), describe or create environments in which the PCs can interact, and solve any player disputes. This basic role is the same in almost all traditional TTRPGs, with minor differences specific to differing rule sets. However, in some
indie role-playing games, the GM role significantly differs from the traditional pattern. For example, in
Powered by the Apocalypse systems, the other players assist the GM in creating both the NPCs and the details of the
campaign setting.
The role of a gamemaster in an
online game is to enforce the game's rules and provide general customer service.
Gaming systems have their own names for the role of the GM. For example, in ''
Dungeons & Dragons
''Dungeons & Dragons'' (commonly abbreviated as ''D&D'' or ''DnD'') is a fantasy tabletop role-playing game (TTRPG) originally created and designed by Gary Gygax and Dave Arneson. The game was first published in 1974 by TSR (company)#Tactical ...
'', they are called
Dungeon Masters, in the ''
World of Darkness'' games, they are called storytellers, and in
Powered by the Apocalypse games they are called a variety of names, such as MCs (master of ceremonies).
GMs are typically hobbyists; however, they are sometimes paid employees or entertainers for hire. This is more common for online games. Paid GMing was very uncommon for TTRPGs before the 2020s.
History and variants of the term
In a role-playing game context, the term ''gamemaster'' was first used by Dave Arneson while developing his game ''
Blackmoor'' in 1971, although the first usage in print may have been ''
Chivalry & Sorcery''.
Each gaming system has its own name for the role of the gamemaster, such as "judge," "narrator," "referee," "director," or "storyteller," and these terms not only describe the role of the GM in general but also help define how the game is intended to be run. For example, the most famous of such terms, the "
Dungeon Master" (or "DM") in ''
Dungeons & Dragons
''Dungeons & Dragons'' (commonly abbreviated as ''D&D'' or ''DnD'') is a fantasy tabletop role-playing game (TTRPG) originally created and designed by Gary Gygax and Dave Arneson. The game was first published in 1974 by TSR (company)#Tactical ...
,'' highlights the game's focus on
dungeon crawling. The
Storyteller System used in
White Wolf Game Studio's
storytelling games calls its GM the "storyteller," while the
rules
Rule or ruling may refer to:
Human activity
* The exercise of political or personal control by someone with authority or power
* Business rule, a rule pertaining to the structure or behavior internal to a business
* School rule, a rule tha ...
- and
setting-focused
''Marvel Super Heroes'' role-playing game calls its GM the "judge." The cartoon inspired role-playing game ''
Toon'' calls its GM the "animator." Some games apply flavorful names to the GM to fit the genre or setting, such as the Keeper of Arcane Lore (in the
occult
The occult () is a category of esoteric or supernatural beliefs and practices which generally fall outside the scope of organized religion and science, encompassing phenomena involving a 'hidden' or 'secret' agency, such as magic and mysti ...
-themed ''
Call of Cthulhu''), the
Hollyhock God (''
Nobilis'', in which the
hollyhock
''Alcea'' is a genus of over 80 species of flowering plants in the mallow family Malvaceae, commonly known as the hollyhocks. They are native to Asia and Europe. The single species of hollyhock from the Americas, the Iliamna rivularis, streamban ...
represents vanity), the Groundskeeper (in the spooky ''
Bluebeard's Bride''), the Mall Rat (in
Visigoths vs. Mall Goths), or the Gaymaster (in
LGBTQ
LGBTQ people are individuals who are lesbian, Gay men, gay, bisexual, transgender, queer, or questioning (sexuality and gender), questioning. Many variants of the initialism are used; LGBTQIA+ people incorporates intersex, Asexuality, asexual, ...
-centered ''
Thirsty Sword Lesbians'').
The term ''gamemaster'' and the role associated with it have been used in the
postal gaming hobby since the 1980s. In typical play-by-mail games, players control armies or civilizations and mail their chosen actions to the GM. The GM then mails the updated game state to all players on a regular basis. Usage in a wargaming context includes
Guidon Games 1973 ruleset, ''
Ironclad
An ironclad was a steam engine, steam-propelled warship protected by iron armour, steel or iron armor constructed from 1859 to the early 1890s. The ironclad was developed as a result of the vulnerability of wooden warships to explosive or ince ...
''.
In traditional tabletop role-playing games
The gamemaster prepares the game session for the players and the characters they play (known as
player character
A player character (also known as a playable character or PC) is a fictional Character (arts), character in a video game or tabletop role-playing game whose actions are controlled by a player rather than the rules of the game. The characters tha ...
s or PCs), describes the events taking place and decides on the outcomes of players' decisions. The gamemaster also keeps track of
non-player characters (NPCs) and
random encounters, as well as of the general state of the game world. The game session (or "
adventure
An adventure is an exciting experience or undertaking that is typically bold, sometimes risky. Adventures may be activities with danger such as traveling, exploring, skydiving, mountain climbing, scuba diving, river rafting, or other extreme spo ...
") can be metaphorically described as a
play
Play most commonly refers to:
* Play (activity), an activity done for enjoyment
* Play (theatre), a work of drama
Play may refer also to:
Computers and technology
* Google Play, a digital content service
* Play Framework, a Java framework
* P ...
, in which the players are the lead actors, and the GM provides the
stage, the
scenery, the basic
plot on which the
improvisation
Improvisation, often shortened to improv, is the activity of making or doing something not planned beforehand, using whatever can be found. The origin of the word itself is in the Latin "improvisus", which literally means un-foreseen. Improvis ...
al script is built, as well as all the
bit parts and
supporting characters. Gamemasters can also be in charge of RPG board games making the events and setting challenges.
GMs may choose to run a game based on a
published game world, with the maps and history already in place; such game worlds often have pre-written adventures. Alternatively, the GM may
build their own world and script their own
adventures.
In online games
In early
virtual world
A virtual world (also called a virtual space or spaces) is a Computer simulation, computer-simulated environment which may be populated by many simultaneous users who can create a personal Avatar (computing), avatar and independently explore th ...
s, gamemasters served as a
moderator or
administrator. In
MUD game masters were called "
wizards." Gamemastering in the form found in traditional role-playing games has also been used in semi-automatic virtual worlds. However, human moderation was sometimes considered unfair or out of context in an otherwise automated world.
As
online games expanded, gamemaster duties expanded to include being a
customer service representative
Customer service representatives, customer service advisors, customer service agents, or customer service associates are employees who interact with customers to handle and resolve complaints, process orders, and provide information about an organ ...
for an
online community
An online community, also called an internet community or web community, is a community whose members engage in computer-mediated communication primarily via the Internet. Members of the community usually share common interests. For many, on ...
. A gamemaster in such a game is either an experienced volunteer player or an employee of the game's publisher. They enforce the game's rules by banishing spammers,
player killers, cheaters, and
hackers and by solving players' problems by providing general customer service. For their tasks they use special tools and characters that allow them to do things like teleport to players, summon items, and browse logs that record players' activities.
''
World of Warcraft
''World of Warcraft'' (''WoW'') is a 2004 massively multiplayer online role-playing (MMORPG) video game developed and published by Blizzard Entertainment for Windows and Mac OS X. Set in the '' Warcraft'' fantasy universe, ''World of War ...
'' has employees of
Blizzard Entertainment
Blizzard Entertainment, Inc. is an American video game developer and Video game publisher, publisher based in Irvine, California, and a subsidiary of Activision Blizzard. Originally founded in 1991, the company is best known for producing the h ...
that serve as gamemasters to help users with various problems in gameplay, chat, and other things like account and billing issues. A gamemaster in this game will communicate with players through chat that has blue text and they will also have a special "GM" tag and Blizzard logo in front of their names.
''
RuneScape'' has more than 500 moderators employed by
Jagex to assist players and perform administrative duties in-game and on the site forums. These ''Jagex Moderators'', as they are called, usually have the word "Mod" and a gold crown preceding their account names which ordinary players are not permitted to use. The game also has ''Player Moderators'' and ''Forum Moderators'' who are player volunteers helping with moderation, having the ability to mute (block from chatting) other players who violate rules.
In ''
Helldivers 2'', a
third-person shooter by
Arrowhead Game Studios, a single employee named Joel Hakalax functions as a game master for the game's colossal playerbase. The game features many real-time events where territory is gained or lost purportedly by the players' performance, which are determined at the discretion of the game master.
Additional online games
The now defunct ''
America Online
AOL (formerly a company known as AOL Inc. and originally known as America Online) is an American web portal and online service provider based in New York City, and a brand marketed by Yahoo! Inc. (2017–present), Yahoo! Inc.
The service tra ...
'' Online Gaming Forum used to use volunteers selected by applications from its user base. These people were simply referred to as OGFs by other members, and their screennames were indicative of their position (i.e., OGF Moose, etc.). While membership in the Online Gaming Forum had only one real requirement (that is, be a member of AOL), OGFs were given powers quite similar to AOL "Guides" and could use them at will to discipline users as they saw appropriate. ''
Battleground Europe
''World War II Online: Blitzkrieg'' is a World War II massively multiplayer online first-person shooter (MMOFPS) developed by Playnet, Inc.'s internal game studio, "Cornered Rat Software", and it was originally released on June 6, 2001 for Micr ...
'', a medium-sized
MMOFPS, has a team of ''Game Moderators'', anonymous volunteers who moderate the game. ''
Miniconomy'', a smaller text-based
MMO, has a team of ''Federals'', experienced players that help moderate the game and interactions. ''
Transformice'', an online multiplayer platformer, has a team of volunteer moderators called ''Mods'' who are experienced players that help moderate the game and interactions. ''
ARMA 3'', an open-world military tactical shooter, has a ''Zeus'' role that allows any player slotted in that role to place down almost any asset in the game including infantry and vehicles, objectives, intelligence, and score-keeping modules. The Zeus can also modify aspects of the world itself including time, weather, and wildlife to create dynamically progressing stories. ''
Neverwinter Nights'' and ''
Vampire: The Masquerade – Redemption'' are
video game
A video game or computer game is an electronic game that involves interaction with a user interface or input device (such as a joystick, game controller, controller, computer keyboard, keyboard, or motion sensing device) to generate visual fe ...
adaptations of
tabletop role-playing game
A tabletop role-playing game (TTRPG or TRPG), also known as a pen-and-paper role-playing game, is a kind of role-playing game (RPG) in which the participants describe their characters' actions through speech and sometimes movements. Participants d ...
s that are played online with one player acting as a traditional gamemaster.
In pervasive games
Gamemastering, sometimes referred to as Orchestration is used in
pervasive games to guide players along a trajectory
desired by the game author.
To ensure proper gamemastering can take place, four components are needed: some kind of sensory system to the game allowing the game masters to know current events, providing dynamic game information; dynamic and static game information lets game masters make informed decisions; decisions need to be actuated into the game, either through the game system or through manual intervention; and finally a communication structure is needed for both
diegetic or non-diegetic communication.
Effective gamemastering can require specialized user interfaces that are highly game specific.
Gamemaster simulation
Certain sourcebooks simulate the decisions of a gamemaster by various means for either group or solo gaming.
''
Dicebreaker'' highlighted that game master "emulators or oracles allow you to play a game and let dice or cards decide what happens next, instead of a human game master".
With solo games, they noted that "many systems abstract the duties of running the game into dice rolls and random tables" while other systems "shift the focus away from numbers and maths in lieu of an experience akin to a
Choose Your Own Adventure
''Choose Your Own Adventure'' is a series of children's gamebooks where each story is written from a second-person point of view, with the reader assuming the role of the protagonist and making choices that determine the main character's actio ...
book".
Generative artificial intelligence
Generative artificial intelligence
Generative artificial intelligence (Generative AI, GenAI, or GAI) is a subfield of artificial intelligence that uses generative models to produce text, images, videos, or other forms of data. These models Machine learning, learn the underlyin ...
(AI), built off of
large language models (LLMs), can also be used to simulate the actions of a gamemaster.
In 2023, both ''
Wired
Wired may refer to:
Arts, entertainment, and media Music
* ''Wired'' (Jeff Beck album), 1976
* ''Wired'' (Hugh Cornwell album), 1993
* ''Wired'' (Mallory Knox album), 2017
* "Wired", a song by Prism from their album '' Beat Street''
* "Wired ...
'' and ''Bell of Lost Souls'' highlighted the limitations of using
ChatGPT as a dungeon master for ''Dungeons & Dragons''.
''Wired'' commented that "ChatDM's taste for fantasy was often a bland amalgam of fantasy scenarios harvested from decades of D&D lore and Tolkienesque tropes" and it struggled "to maintain a consistent story".
They noted this experience reminded them "that a good D&D adventure isn't like being told a story by a novelist or storyteller" as instead "the narrative unfolds communally around a table"; however, ChatD&D "ironically" might be "truer to the game's improv-oriented roots" as the "more free-form" nature means neither the players nor the dungeon master have "a clue as to where the adventure will go".
''Bell of Lost Souls'' noted "asking Chat-GPT to accomplish anything creative really highlights the limits of a Large Language Model" and that while it can produce "great idea-seeds", ChatGPT does not understand "the pacing of a scene in a game, or a story or adventure".
They commented it is "fantastic at helping you iterate" and it can take "a lot of the grunt and guesswork out of the work of ideation" when working on plot development.
''
Polygon
In geometry, a polygon () is a plane figure made up of line segments connected to form a closed polygonal chain.
The segments of a closed polygonal chain are called its '' edges'' or ''sides''. The points where two edges meet are the polygon ...
'', ''
Boing Boing'' and ''
Wargamer'' reported on a July 2024 research paper, by graduate student Pavlos Sakellaridis, which examined the feasibility of a ChatGPT dungeon master built off of ''
The Sunless Citadel'' (2000)
adventure module and transcripts from the
actual play web series ''
Critical Role''.
''Boing Boing'' noted that "Sakellaridis compared player experiences with both AI and human Dungeon Masters" – the results showed "surprising strengths" for the AI Dungeon Master and "while human DMs maintained a slight edge in most categories, the AI excelled at creating immersive environments, scoring 4.13 out of 5 compared to humans' 3.35".
''Wargamer'' similarly highlighted that the "results of his tests are interestingly mixed" with player reports rating the human dungeon master as "more competent, created better flow and narrative progression, and elicited more positive feelings overall", however, they "thought the AI DM was better at creating immersive environments".
''Wargamer'' commented that "Artificial Intelligence is a bit of a misnomer for Chat GPT" since it is a LLM "so the robo DM's ability to create an immersive environment, in a text-based exchange, doesn't mean that it's imaginative. LLMs have been specifically designed to
digest large volumes of copyrighted material down to patterns, and then generate new text that fits into those patterns when prompted".
''Polygon'' stated that "the use of generative AI has been a point of repeated contention in the tabletop industry and beyond, with the technology's critics citing its
environmental impact and its foundations on exploitative labor from both workers based in the global south and artists whose work is nonconsensually used to train the tech".
''Polygon'' highlighted that this academic study used "a complex slurry of variously licensed information, with some sourced from private companies, some sourced from a group of performers, and other materials sourced from volunteers" and it "has raised questions about the hazy nature of
fan works" in relation "to consent in training" of LLMs.
See also
*
Dungeon Master
References
External links
*
{{Pervasive games
Role-playing game terminology
Pervasive games