CommuniCity, a transformative citizen-centred project funded by the European Commission under the Horizon Europe Programme, places citizens at the core of technological innovation. The initiative aims to develop 100 pilots across European cities, including Amsterdam, Helsinki, and Porto, to address issues faced by marginalised communities through collaborative efforts and shared learning. Living Labs, serving as practical test beds, facilitate collaboration among stakeholders to co-create and experiment with potential ideas to improve people’s lives. During the first round of Open Calls, Amsterdam, Helsinki, and Porto led this approach, showcasing inclusive and sustainable models with replication potential. Recently, during the Second Round of Open Calls four new cities: Aarhus, Breda, Prague, and Tallinn; have joined the project as Replicator Cities, focusing on developing innovative technical solutions to address digital, urban, and social challenges. A final and third round of Open Call will invite cities from all over the EU to join the project and embark on this transformative journey.