This book constitutes the refereed proceedings of the 8th Joint International Conference on Serious Games, JCSG 2022, held in Weimar, Germany, in September 2022. The 14 full papers presented together with 5 short papers were carefully reviewed and selected from 31 submissions. JSCG 2022 is dedicated to serious games and its interdisciplinary characteristics combining game concepts and technologies required in the different application domains. This year's proceedings are categorized into the following topical sub-headings: Learning Psychology, Design Aspects, Game Design, Health Games, Games Application, and Mixed Reality.