Disinformation and fake news: it is becoming an increasing threat to European society. Young people are often targeted, and are, as of this moment, not resilient enough to take this matter on, leaving them for instance vulnerable for polarizing messages. Taking two innovative, but successful good practices, and combine them to increase the effectiveness, impact and reach that fighting disinformation in Europe requires: that is the aim of PEGAP. We combine peer education and gamification (based on inoculation theory) to enhance critical thinking and media literacy among young people, parents and teachers. On the one hand recognizing the (sometimes frustrated, stigmatized) perception of youngsters (which makes them vulnerable for polarization), relating to their environment and ideas, on the other hand 'vaccinating' in a stimulating way through gamified methods, letting them experience how disinformation is created. The PEGAP consortium is aimed at both development and implementation: piloting the methodology but simultaneously reaching impact among young people in NL, DE, SE and BE. The Theory of Change that we develop enables however organizations throughout Europe to independently use the methodology, which will be available in an extensive online platform (the 'hub'). All materials (including the game) will be freely available for learners, parents and teachers throughout Europe.