A role-playing game (sometimes spelled roleplaying game and abbreviated to RPG) is a game in which players assume the roles of characters in a fictional setting. Players take responsibility for acting out these roles within a narrative, either through literal acting or through a process of structured decision-making of character development. Actions taken within many games succeed or fail according to a formal system of rules and guidelines.
There are several forms of RPG. The original form, sometimes called the tabletop role-playing game (TRPG), is conducted through discussion, whereas in live action role-playing games (LARP) players physically perform their characters' actions. In both of these forms, an arranger called a game master (GM) usually decides on the rules and setting to be used, acting as referee, while each of the other players plays the role of a single character.
Several varieties of RPG also exist in electronic media, such as multi-player text-based MUDs and their graphics-based successors, massively multiplayer online role-playing games (MMORPGs). Role-playing games also include single-player role-playing video games in which players control a character or team who undertake quests, and may include capabilities that advance using statistical mechanics. These games often share settings and rules with tabletop RPGs, but emphasize character advancement more than collaborative storytelling.
Despite this variety of forms, some game forms such as trading card games and wargames that are related to role-playing games may not be included. Role-playing activity may sometimes be present in such games, but it is not the primary focus. The term is also sometimes used to describe roleplay simulation games and exercises used in teaching, training, and academic research.
Both authors and major publishers of tabletop role-playing games consider them to be a form of interactive and collaborative storytelling. Events, characters, and narrative structure give a sense of a narrative experience, and the game need not have a strongly-defined storyline. Interactivity is the crucial difference between role-playing games and traditional fiction. Whereas a viewer of a television show is a passive observer, a player in a role-playing game makes choices that affect the story. Such role-playing games extend an older tradition of storytelling games where a small party of friends collaborate to create a story.
While simple forms of role-playing exist in traditional children's games of make believe, role-playing games add a level of sophistication and persistence to this basic idea with additions such as game facilitators and rules of interaction. Participants in a role-playing game will generate specific characters and an ongoing plot. A consistent system of rules and a more or less realistic campaign setting in games aids suspension of disbelief. The level of realism in games ranges from just enough internal consistency to set up a believable story or credible challenge up to full-blown simulations of real-world processes.
Role-playing games are played in a wide variety of formats ranging from discussing character interaction in tabletop form to physically acting out characters in LARP to playing characters virtually in digital media. There is also a great variety of systems of rules and game settings. Games that emphasize plot and character interaction over game mechanics and combat sometimes prefer the name storytelling game. These types of games tend to minimize or altogether eliminate the use of dice or other randomizing elements. Some games are played with characters created before the game by the GM, rather than those created by the players. This type of game is typically played at gaming conventions, or in standalone games that do not form part of a campaign.
Tabletop and pen-and-paper (PnP) RPGs are conducted through discussion in a small social gathering. The GM describes the game world and its inhabitants. The other players describe the intended actions of their characters, and the GM describes the outcomes. Some outcomes are determined by the game system, and some are chosen by the GM.
This is the format in which role-playing games were first popularized. The first commercially available RPG, Dungeons & Dragons (D&D), was inspired by fantasy literature and the wargaming hobby and was published in 1974. The popularity of D&D led to the birth of the tabletop role-playing game industry, which publishes games with many different themes, rules, and styles of play. The popularity of tabletop games has decreased since the modern releases of online MMO RPGs.
This format is often referred to simply as a role-playing game. To distinguish this form of RPG from other formats, the retronyms tabletop role-playing game or pen and paper role-playing game are sometimes used, though neither a table nor pen and paper are strictly necessary.
A LARP is played more like improvisational theatre. Participants act out their characters' actions instead of describing them, and the real environment is used to represent the imaginary setting of the game world. Players are often costumed as their characters and use appropriate props, and the venue may be decorated to resemble the fictional setting. Some live action role-playing games use rock-paper-scissors or comparison of attributes to resolve conflicts symbolically, while other LARPs use physical combat with simulated arms such as airsoft guns or foam weapons.
LARPs vary in size from a handful of players to several thousand, and in duration from a couple of hours to several days. Because the number of players in a LARP is usually larger than in a tabletop role-playing game, and the players may be interacting in separate physical spaces, there is typically less of an emphasis on tightly maintaining a narrative or directly entertaining the players, and game sessions are often managed in a more distributed manner.
Tabletop role-playing games have been translated into a variety of electronic formats. As early as 1974, the same year as the release of Dungeons & Dragons, unlicensed versions of it were developed on mainframe university systems under titles such as dnd and Dungeon. These early computer RPGs influenced all of electronic gaming, as well as spawning the role-playing video game genre. Some authors divide digital role-playing games into two intertwined groups: single player games using RPG-style mechanics, and multiplayer games incorporating social interaction.
Single player role-playing video games form a loosely defined genre of computer and console games with origins in role-playing games such as Dungeons & Dragons, on which they base much of their terminology, settings, and game mechanics. This translation changes the experience of the game, providing a visual representation of the world but emphasizing statistical character development over collaborative, interactive storytelling.
Online text-based role-playing games involve many players using some type of text-based interface and an Internet connection to play an RPG. Games played in a real-time way include MUDs, MUSHes, and other varieties of MU*. Games played in a turn-based fashion include play-by-mail games and play-by-post games.
Massively multiplayer online role-playing games (MMORPGs) combine the large-scale social interaction and persistent world of MUDs with graphic interfaces. Most MMORPGs do not actively promote in-character role-playing, however players can use the games' communication functions to role-play so long as other players cooperate. The majority of players in MMORPGs do not engage in role-play in this sense.
Computer-assisted gaming can be used to add elements of computer gaming to in-person tabletop role-playing, where computers are used for record-keeping and sometimes to resolve combat, while the participants generally make decisions concerning character interaction.
One common feature of many RPGs is the role of gamemaster, a participant who has special duties to present the fictional setting, arbitrate the results of character actions, and maintain the narrative flow. In tabletop and live action RPGs the GM performs these duties in person. In video RPGs many of the functions of a GM are fulfilled by the game engine. However some multi-player video RPGs also allow for a participant to take on a GM role through a visual interface called a GM toolkit, albeit with abilities limited by the available technology.
Another standard concept in RPGs is the player character, a character in the fictional world of the game whose actions the player controls. Typically each player controls a separate player character, sometimes more, each of whom acts as a protagonist in the story.
In contrast to player characters, non-player characters (NPCs) are controlled by the gamemaster or game engine, or by people assisting the gamemaster. Non-player characters fill out the population of the fictional setting and can act as antagonists, bystanders or allies of the player characters.
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