Addventure

An addventure, also called a collaborative gamebook, is a type of online interactive fiction that combines aspects of round-robin storytelling with Choose Your Own Adventure-style branching narratives. Like a round-robin story, it is a form of collaborative fiction in which many authors each contribute discrete segments, but like a gamebook the resulting narrative is non-linear, letting authors branch the story in different directions after each segment. The result is a continually growing work of hypertext fiction.