Gamification is defined as the use of game design elements in non-game contexts. Such elements include scores, leaderboards, as well as visual elements like progress bars or customizable avatars, but also social aspects like user interactions, discussions and competition. The purpose of gamification is to enhance users' engagement and participation in an activity, therefore promoting desirable behaviours by the user as well as discouraging undesirable ones. Gamification has been applied in various fields and contexts, from habit design to fitness, as well as learning and education, where it has shown a powerful effect in encouraging user's engagement and participation in learning experiences, and therefore enhancing the didactic effect altogether.