In this paper I discuss broad concepts that are at the centre of debates in the digital history field. The discussion ranges over four key concepts: digital interactivity, narrative, content and form. Digital interactivity is a shifting concept, the changes in its meaning directed by technological change. Narrative, which continues to be the primary mode for the telling of history, is gaining new meanings as interactive modes prompt the question of what can be considered ‘narrative’ and what cannot. Particular kinds of historical content lend themselves more readily to interactive representation, but to discuss this is to acknowledge that what counts as ‘history’ has been expanded immeasurably over the past decades. Finally, the many hybrid forms being utilised in the digital history field requires that new critical frameworks be developed to help theorise and differentiate those forms.