Campaign setting in the context of "Expansion pack"

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. 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 (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.

Role-playing video games, also known as computer role-playing games (CRPG), comprise a broad video game genre generally defined by a detailed story and character advancement (often through increasing characters' levels or other skills). Role-playing games almost always feature combat as a defining feature and traditionally used turn-based combat; however, modern role-playing games commonly feature real-time action combat or even non-violent forms of conflict resolution (with some eschewing combat altogether). Further, many games have incorporated role-playing elements such as character advancement and quests while remaining within other genres.

Role-playing video games have their origins in tabletop role-playing games and use much of the same terminology, settings, and game mechanics. Other major similarities with pen-and-paper games include developed story-telling and narrative elements, player-character development, and elaborately designed fantasy worlds. The electronic medium takes the place of the gamemaster, resolving combat on its own and determining the game's response to different player actions. RPGs have evolved from simple text-based console-window games into visually rich 3D experiences.

Forgotten Realms is a campaign setting for the Dungeons & Dragons (D&D) fantasy role-playing game. Commonly referred to by players and game designers as "The Realms", it was created by game designer Ed Greenwood around 1967 as a setting for his childhood stories. Several years later, it was published for the D&D game as a series of magazine articles, and the first Realms game products were released in 1987. Role-playing game products have been produced for the setting ever since, in addition to novels, role-playing video game adaptations (including the first massively multiplayer online role-playing game to use graphics), comic books, the Forgotten Realms play-by-mail game, and the film Dungeons & Dragons: Honor Among Thieves.

Forgotten Realms is a fantasy world setting, described as a world of strange lands, dangerous creatures, and mighty deities, where magic and supernatural phenomena are very real. The premise is that, long ago, planet Earth and the world of the Forgotten Realms were more closely connected. As time passed, the inhabitants of Earth had mostly forgotten about the existence of that other world – hence the name Forgotten Realms. The original Forgotten Realms logo, which was used until 2000, had small runic letters that read "Herein lie the lost lands" as an allusion to the connection between the two worlds.

The flexibility of the Dungeons & Dragons (D&D) game rules means that Dungeon Masters (DM) are free to create their own fantasy campaign settings. For those who wanted a pre-packaged setting in which to play, TSR, Wizards of the Coast (WotC), and other publishers have created many settings in which D&D games can be based; of these, the Forgotten Realms, an epic fantasy world, has been one of the most successful and critically acclaimed settings. Many campaign settings include standard sword and sorcery environments, while others borrow Asian, Central American, swashbuckling, horror and even spaceflight themes.

These are official D&D campaign settings that have been published or licensed by TSR or WotC. Theros and Ravnica originated in the Magic: The Gathering franchise, another property of WotC. A number of the settings here are no longer published or officially licensed, though all have active fan bases.