The “Game of Natures” Erasmus+ project aimed at explore and providing new techniques in GBL and gamification to increase the participation of young people on environmental, cultural and inclusive activities. During the training, we applied game-design and gamification techniques to develop and test three different game prototypes, or mini-games, in the context of environmental volunteering activities. We analyzed how such activities can be made more dynamic, so that they become «environmental leisure» activities. We developed and tested the three games carrying out a beach cleaning activity.