Border-Fictioning is an ecosophical architecture, in which relations between space, power, personal histories, political narratives, indigenous animals, matter, and the earth generate new forms of affective encounter of more-than-human relations. In the light of future global political, environmental and economic crises (chthulucene or capitaloscene as Harraway / Demos suggested) we explore through The Eile Project a new ethics, aesthetics and mode of spatial practice that open up new fragile border imaginaries. A resistant form of fictioning seeks to act in transformative ways as a practice of architecture in physical, embodied and experiential terms, as fictioning might "impact on the real, change it, in some way." Our research-based praxis on the border between Ireland + UK generates ‘territorial apparatuses’ including situated performance/interventions, audiovisual films, human and non-human bodies, organic and inorganic matter, sonic territories and chthonic architectures.