Narrative strategies, immersion, interaction, participation, identification, multimodality, characters and the connection between physical and fictional or virtual worlds: the fields of inquiry into the complex relationship between live performance and video games are numerous and diverse. For the first time, this collection brings together international researchers and artists to explore this relationship in a variety of essays. The contributors to this volume focus on reciprocal inspirations, appropriations and transfers applied by theatre artists, game designers and researchers. They analyze several artistic forms such as VR performance, immersive theatre, speedrunning or Game-Theatre.