This document discusses representations of complexity in interactive digital narratives and the need for research on this narrative form. It provides an overview of interactive digital narratives, noting they encompass a range of forms from narrative video games to interactive documentaries. It also addresses criticisms of interactive digital narratives by arguing they are new types of narratives, not deficient versions of other forms. The document examines concepts of narrative and argues narrative is a cognitive function not tied to specific forms, and that many non-Western narrative structures differ from the mainstream Eurocentric model. It provides examples of alternative narrative structures from different cultures.