Through multiple case studies – consisting of nine co-creative Youth Citizen Social Science projects across Europe – the project will provide increased knowledge of the positive drivers for social inclusion in general and specific knowledge and innovation about participation, belonging, and citizenship. Through hands-on citizen science researchers and young co-researchers are creating local living labs, doing interviews, developing dialogue forums, organising local and national workshops and using and app specifically created to gather and share daily lived experiences of inclusion and exclusion. The project also involves co-evaluating our impact and how co-created citizen social science worked across the cases as well as within each case.