The aim of this special issue of the Fibreculture Journal is to address some of the contemporary challenges involved in working with affect across disciplines and practices that centre on the use of interactive- or digital technologies. The issue has a special focus on interaction design, interaction-based art and digital art. The pivotal question, as we see it, might be framed roughly like this: How do we explore the “field of questioning” that arises when we approach the affective in relation to interaction design, interaction-based art and digital art? What is the use of disciplinary goals when the affective has been proven most valuable in trans-disciplinary theory? Where do we go from here, that is, how can we continue working with the notion of affect, develop it in new theoretical, analytical and practical domains? What key concepts would emerge from this continued trajectory and how would they feed back onto the theoretical propositions? How would they resonate within and with-out existing disciplines, creating novel links and assemblages?