4th Edition Player's Handbook Definition of RPG

A roleplaying game is a storytelling game that has elements of the games of make-believe that many of us played as children. However, a roleplaying game such as D&D provides form and structure, with robust gameplay and endless possibilities. D&D is a fantasy-adventure game. You create a character, team up with other characters (your friends), explore a world, and battle monsters. While the D&D game uses dice and miniatures, the action takes place in your imagination. There, you h...

 DM as Collaborator with Players

Most games have a winner and a loser, but the Dungeons & Dragons Roleplaying Game is fundamentally a cooperative game. The Dungeon Master (DM) plays the roles of the antagonists in the adventure, but the DM isn’t playing against the player characters (PCs). Although the DM represents all the PCs’ opponents and adversaries—monsters, nonplayer characters (NPCs), traps, and the like—he or she doesn’t want the player characters to fail any more than the other players do. The players...