Abstract. Multi-participant Interactive Narratives have the potential for novel types of story and experiences, but there is no framework to show what is possible, and therefore no description of what types of multi-participant narrative could exist. In this paper, we attempt to build such a framework by first considering the core characteristics of interactions in multiplayer games, and then considering how those might be used to define different types of multi-participant narrative. Our framework is based on a systematic analysis of 56 interactions across 17 multiplayer games, resulting in 9 distinguishing characteristics. We then validate this framework by applying it to 3 novel multiplayer games, showing that it successfully captures the player interactions, although some higher level design decisions are missed. Finally, we demonstrate that novel premises for multi-participant narratives can be constructed from these characteristics. Our work provides a foundation for considering the types of multi-participant narrative that are possible.