Future crises such as natural disasters will be shaped by climate change and involve complex causal relationshipsaffecting multiple societal actors. To enhance understanding and engagement with these challenges, this paperpresents a large-scale social game (megagame) approach designed to explore energy production, distribution, andconsumption within a broader socio-political context. Megagames, as large-scale social simulations, enableparticipants to experience decision-making processes, trade-offs, and systemic interdependencies. Findings fromsix iterations of the game reveal that participants struggle to act early enough to mitigate emissions, prioritizingshort-term goals over long-term sustainability. However, through gameplay, they develop a deeper awareness ofthe interconnectedness of energy, society, and climate. The game fosters experiential learning, demonstrating thechallenges of transforming energy systems while addressing climate-induced disasters. Results suggest thatmegagames can be effective tools for fostering systems thinking, stakeholder collaboration, and climate action,making them valuable for education, policy development, and crisis preparedness.