Risk management has become an essential skill for civil engineers. Teaching risk management to engineering students is therefore crucial, but is also challenging: it looks too abstract to students, and practical works are complex and expensive to organise. It also involves interconnected mechanisms coupling human and technical aspects, that are difficult to explain. In order to support risk management teaching, we propose SPRITE, an agent-based serious game using a concrete case study which is exemplary in terms of risk management: the coastal floods on the Oleron Island (France). SPRITE places the player (student) in the role of a local councillor of the Oleron Island, who must ensure the safety and well-being of the island residents, while maximising performance w.r.t. economic and environmental issues, in a context of coastal flood risk. SPRITE is the central piece of a pedagogical sequence which is actually used in risk management courses at Bordeaux University. This paper describes the SPRITE serious game and the underlying agent-based model, and reports on some lessons learnt from its use in a risk management course. Keywords: Serious game, risk management teaching, ABMS share the same case-study, their approach and purpose are completely different. LittoSIM is more realistic and more complex than SPRITE, because it is intended for local authorities, who have a strong knowledge of the Oleron territory. It was not designed for teaching, but to make experts reflect on their strategy for the Island. The difference of target player and objectives led to different modeling and game design choices, making the two models very different. In particular they differ on the available player actions, the user interface, the game rules and objectives, the simulation mechanisms and level of realism, etc. This paper is structured as follows: Section 2 briefly discusses some literature about the use of serious games for teaching in general, and teaching risk management in particular. Section 3 introduces our case study (the coastal flood risk on the Oleron island) and the SPRITE conceptual agent-based model, designed to raise awareness about that risk. Section 4 describes the serious game based on this model, its game design and its implementation. Section 5 introduces the methodology and first results of our evaluation of the use of SPRITE for teaching risk management. Finally, Section 6 concludes and discusses future prospects.