Serious games have become widely prevalent, manifesting either as board games or role-playing experiences, designed to train individuals to think and respond in intricate scenarios that are often challenging to replicate and control in real life. Concurrently, numerous agent-based simulations, wherein simulated actors exhibit complex behaviors, are being developed to delve into the potential dynamics of intricate systems. This paper introduces a fusion of these two methodologies, where a serious game built upon an agent-based simulation immerses users in conditions as closely resembling crisis management scenarios as possible. This amalgamation is not without its challenges, as serious games come with specific requirements that may clash with existing simulation frameworks. These include real-time interaction with the simulation, precise replay of given scenarios, an engaging display to captivate players, and the ability to manage multiple users playing different roles simultaneously on the same simulation. To do so, the ESCAPE-SG serious game is presented. It is crafted on the foundation of ESCAPE, an established agent-based model aimed at simulating mass evacuations of populations from areas facing significant natural or technological hazards. The encountered challenges and the solutions devised to overcome them are outlined. Additionally, a software architecture is proposed to facilitate the connection between an agent-based simulation and a front-end display, serving as an interface for users.