Governance of complex socio-ecological problems such as climate change, deforestation, and chronic wildfires is becoming “messier”. Theory and case study evidence suggest that “messy” institutional characteristics like non- government involvement and multi-level decision-making can improve social and environmental outcomes. However, these characteristics still lack systematic documentation, and there have been few efforts to systematically characterize and compare the interventions associated with them. We examined 60 fire management interventions (FMI) undertaken between 1999 and 2016 in response to Indonesia's disastrous peatland fires. We documented their institutional characteristics (i.e., lead sector, multi-level character) and compar...