The Arbaso Eguna project, created by IKERTZE together with the University of the Basque Country and financed by Kutxa Fundazioa, is a cultural and educational initiative that seeks to stimulate the collective imagination in contexts of eco-social crisis and cultural diversity. It is based on a collaborative role-playing game inspired by the solarpunk movement, where the participants are placed in a future in which many of the current social challenges have already been solved. From there, the objective is to look back and imagine what decisions and processes have made it possible to reach that stage, thus working the complexity of these challenges from a more open and constructive perspective, understanding hope as something that is woven collectively.