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.