The choices that you can make during the course of a roleplaying game are limited only by your own imagination. This freedom of choice is made possible because the flow of the game is influenced by living, breathing, people as opposed to a computer program or other artificial structure that provides only for a finite number of options by design.
When playing Light 20, one player assumes the role of the Dunjeonmaster (referred to as the Game Master or Referee in many other games). The Dunjeonmaster is the player responsible for describing the setting as the other players’ characters explore and interact with it, as well as describing how it changes based upon the choices that the players make and the actions that their characters take. Additionally, the Dunjeonmaster is responsible for assuming the roles of characters and creatures not controlled by the other players (the likes of which will be discovered while exploring the world).
Every person playing a game, aside from the Dunjeonmaster, is referred to simply as a ‘player’ and the character roles that they assume during the course of the game are referred to as ‘player characters’. When multiple player characters are involved in a game, they often travel together in a group known as a ‘party’. Together these heroes explore the world, seeking out adventure, and performing heroic deeds that will make them the subject of tales and legends for years to come.
As characters explore the world, their players make numerous decisions and take numerous actions that will change it. The Dunjeonmaster informs the players of how their decisions and character actions change the world as they are made and, thus, it is in this manner that adventures unfold. Unlike many traditional games, in a role-playing game there aren’t any clear winners or losers. In games of Light 20, fun is the result of cooperation rather than competition.