Gamification, the integration of game design elements into various processes, has found application in promoting sustainability. The field of simulation and gaming has a history of using games to teach and raise awareness about sustainability issues, covering all areas addressed by the United Nations Sustainable Development Goals. Gamification has emerged as a solution to bridge the gap between knowledge and action in sustainable development. It can motivate individuals to improve sustainability, create networks to solve complex problems, and has been successful in interventions such as reducing energy consumption and promoting sustainable food choices. There are different design approaches to gamification, including instrumental design that nudges behavior and humanistic design that involves users in co-defining problems and solutions. This issue of the Simulation & Gaming journal explores the success factors of gamified interventions in sustainable development, including business models, contextual factors, and skill-building interventions. The issue includes articles on gamified sustainable consumption apps, promoting virtuous water usage practices, and teaching road safety to school children using virtual reality. [Extracted from the article]