Flood events are among the most frequent and disruptive natural hazards worldwide, with significant social, economic, and environmental consequences. Despite increasing awareness of climate change and extreme weather, effective preparedness at the community level often remains limited. Serious games, tools designed with both educational and engaging purposes, offer an innovative pathway to enhance risk awareness and promote proactive behaviors in crisis scenarios putting the trainee in the center of its own education. This project presents the design and early development of a serious game named "All in the same boat" aimed at improving flood risk preparedness among diverse target audiences, including students, local stakeholders, and emergency response actors. The game integrates realistic flood scenarios and decision-making challenges (e.g negotiating decisions based on limited resources) to foster experiential learning and collective problem-solving. Its design framework draws upon multiple interdisciplinary approaches, combining insights from hydrology, risk communication, environmental psychology and educational sciences. We present a prototype, along with preliminary feedback from pilot testing sessions. Special attention will be given to the balance between scientific accuracy and playability, as well as to the adaptability of the game to different socio-cultural contexts. This contribution highlights the potential of serious games as innovative tools for disaster risk reduction and offers practical reflections on their design process, challenges, and opportunities for broader implementation in flood-prone regions.