In Interactive Digital Storytelling (IDS), new design processes are needed for authors to fully embrace the emergent properties of this dynamic novel medium. As a counterpart to traditional explicit authoring in storytelling, “implicit creation” is introduced as a conceptual framework. By describing the development steps of a specific IDS application – the Killer Phrase game – and starting out with explicit methods, the conditions for adding implicit creation are discussed, which lead to suggestions for future research. Keywords. interactive digital storytelling, implicit creation, authoring, emergence, emergent narrative, storyworld.