DeCrises tests how community-led social innovation (SI) projects are integrated into the multi-level governance processes and proposes a stable space for them in an MLG system by focusing on four cross-regional SI projects from the Baltic Sea Region (BSR), namely, Green Region Vestland (Norway), Fingrid Datahub (Finland), Municipality of Potęgowo (Poland), and City of Riga (Latvia), and their impact and effectiveness on social development, cohesion, and inclusion in the national context. This region epitomises a microcosm of the broader EU, and its study promises to provide invaluable insights into the twin transition and decarbonisation pathways, especially in times of crises.