1. National Defence University, Department of Leadership and Military Pedagogy, Helsinki, Finland
2. Gamification Group, Faculty of Information Technology and Communication Sciences, Tampere University, Tampere, Finland
3. Imec the Netherlands, Eindhoven, The Netherlands
4. Department of Computer Science, Helsinki Institute for Information Technology HIITUniversity of Helsinki, Helsinki, Finland
5. Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland