


"Dungeon Master", or "DM", arrived with Advanced Dungeons & Dragons, from which Game Master became the generic term. Dungeons & Dragons: "Referee" was the original term used in the very first version (published in 1974 by Gary Gygax and Dave Arneson, may they Role-play In Peace), and in Traveller (published in 1977).Renaming the Game Master is a popular option to add a dash of custom flavor to a game: They're the cops, in other words, whereas a Tabletop GM is the ruling deity of their world. Note that the GMs in MMO Games (RPG or otherwise) are more like moderators with punitive powers but no ability to change the fundamentals of the game itself.

Unless you're running some sort of automobile centered RPG. The Game Master may encourage a variety of game styles (ranging from dice-heavy hack-and-slash to semi-freeform roleplaying) and moods (ranging from the sadistic and adversarial to loot raining from the heavens).

Game Masters may be practiced actors, and some GMs are also talented vocal artists and authors - for some, they're skills that see a lot of use, and many games have come into legend because of a memorable GM-controlled NPC.
