Extremist ideologies are proliferating nowadays in both political and social levels. Considering that youngsters are in a development stage where they are still conforming their own social identity, they become especially vulnerable to these ideologies' influence. Therefore, it becomes critical to provide them with the psychological skills to rationalize and resist those influences. Video games, which are already a technology commonly consumed by these generations, provide a way to motivate and engage youngsters. Therefore, implementing these video games in interventions to increase psychological resilience represents an opportunity to create an innovative learning approach. Following this motivation, this paper has three main objectives: adapting a traditional emotional intelligence training program to a novel serious game based intervention, called YoungRes; providing a metric to measure the student' evolution based on ingame behavioural patterns, instead of indirect measures; and evaluating the impact of the intervention itself after its implementation. To do so, an 11 sessions intervention was applied to 36 students from two primary schools in Spain. Quantitative and qualitative data was extracted from the experience, consisting on data extracted from the player's behaviour and a final survey. A detailed statistical analysis carried out showed two main outcomes: first, the serious game based intervention was very appreciated by the students, specially by those who frequently play video games; second, the intervention allowed to improve several emotional intelligence competences, such as active listening and controlled breathing, as well as to promote knowledge about the Islamic culture. Finally, the authors discussed about how the game could be improved for future applications in schools.