The 26th European Association of Computer-Assisted Language Learning (EUROCALL) conference was organised by the University of Jyväskylä (JYU) Language Campus and specifically the Language Centre, in Jyväskylä, Finland. The theme of this year's conference was "Future-proof CALL: language learning as exploration and encounters," which reflects an attempt to envision language teaching and learning futures in a changing world. What brought researchers together this year are shared concerns in relation to the sustainability of language learning and teaching in technology-rich contexts that are marked by ever-increasing complexity. 184 submissions were accepted to be presented as workshops, symposia, individual oral presentations, or posters. The oral presentations were categorised as research, research and development, reflective practice papers, along with presentations on European projects. The collection of short papers in this volume is a very thorough view into the conference proper exhibiting the complexity and novelty of the field of CALL. There are exciting new openings and a more profound exploration of theoretical underpinnings of the contemporary issues in teaching and learning, cross-cultural communication, mobile learning and the like. (Individual papers contain references.)