There is an urgent need to build city resilience in order to face upcoming foreseen and
unforeseen disasters more holistically, economically and collaboratively. Population trends mean that
people are moving to urban areas and the traditional approach to crisis management is becoming
obsolete as it is no longer able to deal with the new challenges that are emerging such as social
dynamics or climate change. In this context, there are numerous studies and strategies that define
how to build city resilience and consequently sustainable cities. However, decision-makers have
trouble putting the knowledge in the studies and strategies into practice, as they find this information
to be too abstract or far from their daily activities. More practical tools are needed to facilitate the
operationalization of city resilience and familiarize decision makers with the concept. To that end,
this paper presents both a qualitative and quantitative toolkit that enables decision makers to study,
understand and train themselves to operationalize city resilience properly. This toolkit is composed
of two complementary tools, namely the Resilience Maturity Model (RMM) and a serious game
called City Resilience Dynamics (CRD). The paper also discusses the key points that led to a useful,
trustworthy and flexible toolkit that decision-makers can use in building city resilience
