EDITUA catalyses just, community-led urban regeneration by combining open digital tools, participatory practice and rigorous research. The project builds the EcoUrban Composer—an accessible, game-like platform for simulation, evaluation and co-design—paired with an operational protocol and a comparative handbook of validated interventions. Poznan University of Technology coordinates the consortium, leads Polish pilots and guides tool development. The University of Ljubljana anchors the project’s theoretical framework and drives comparative research. The University of Thessaly brings Mediterranean place-based expertise, participatory methods and heritage recognition including archaeological sites. The Estonian Academy of Arts contributes major technical input to the digital tool and provides ecological guidance and experimental design approaches. Together the four partners will run pilots across Poznań, Tallinn and Volos/Larisa, co-develop open-source outputs, share curricula and produce policy-ready guidance. EDITUA emphasises transparency, inclusivity and measurable environmental and social outcomes, empowering residents and municipalities with transferable and scalable pathways for equitable, biodiversity-rich urban transformation.