Network Thinking™ is a research-based training methodology developed by Dr. Daria Tataj. Anchored in Prof. Castells’ theory of the Network Society, it creates a process to unleash growth through the power of networks. This Innovation Masterclass was organized by Tataj Innovation Studio to discuss a growth model for mid-size cities in the network economy. It gathered key representatives of the Catalan ecosystem who played the Network Thinking™ prototype game to strategize how to transform ideas of the EIT Alumni developed during StartupDays Barcelona to transform Badalona Port and famous „3 Chimeneas” power plant factory.