Modern rule systems (such as the coin system in Universalis) rely less on randomness and more in collaboration between players. This includes rules based on economic systems that force players to negotiate the details of the story, and solve conflicts based on the importance that they give to a given plot element and the resources they're willing to spend to make it into the story. Collaborative fiction Collaborative fiction is a form of storytelling which uses collaborative writing as the primary medium, where a group of authors share creative control of a story. Collaborative fiction can occur for commercial gain, as part of education, or recreationally – many collaboratively written works have been the subject of a large degree of academic research. See also Letter game Round-robin story Lexicon, combining a "Letter Game" and "collaborative fiction" in the form of an encyclopedia. Make believe Mind's Eye Theatre New Worlds Project, an online interactive storytelling game Once Upon a Time, a card game about creating fairy tales Universalis References Game terminology Role-playing game terminology Storytelling