Technologies that were initially developed to be applied within the domain of video games are currently being used in experiments to explore their meaning and possibilities for cinema and cinema audiences. In this position paper we examine how narrativity, interactivity and engagement are mutually reshaped within this new domain of media entertainment, addressing both the production and the user experience of new types of interactive cinematography. We work towards research questions that will direct our future studies and in-troduce the term lean in to address the kind of engagement style that applies to users within this new domain.