A Taxonomy of Techniques in Nonlinear Fiction
Non-linear fiction ranges from the use of static plots with events presented in a non-chronological way to interactive story worlds where users make choices that affect the outcome of the story. A wide range of media can be used to implement works of non-linear fiction, including novels, film, storytelling engines, and games. In all of these cases, there are multiple techniques available for designing and telling a non-linear story.
We have compiled a taxonomy for these techniques with broad categories for strategies for explaining non-linearity, structuring stories as graphs, relying on emergent behaviour, creating character driven plots, and designing data-driven interactive worlds. Each of these categories breaks down further with classic examples from all types of media and with approaches reported on in academic literature. For instance, a strategy to explain a story’s non-linearity is to attribute it to time travel (The Legend of Zelda: Orcarina of Time) or to a hallucinating or brain-damaged character (Memento). Many examples use a simple branching structure to change the story based on player choices (Choose Your Own Adventure) while others rely on game data to adjust how other characters in the story react to you (Fallout 3).
In a talk given at Experiencing Stories with/in Digital Games (Entretiens Jacques Cartier), held in October 2011, we presented our taxonomy and framed it in the context of story in games. We discussed what techniques have been used in existing games, and which have not yet been employed. We considered why games have not used certain techniques, and used this to suggest how they might do so in the future.