Effective training methods are key to successful crisis management in close protection. This paper discusses the outcomes of a project on the development of a serious game, a virtual training environment for close protection. The aims of the game are to improve situational awareness and communications skills at the individual and team level. Two game designs, developed with two different game engines, are presented and discussed in relation to the project's objectives. Comparison of the two designs shows that several trade-offs are encountered when developing a training game with the available technology. Technological features of the game engines, and differences in time invested in the development of different aspects of the games, make that the two designs meet different project objectives. Simultaneously reaching all project objectives in a single design seems impossible with the two game engines. This paper discusses the different trade-offs that were encountered in the project and presents the major challenges that lie ahead.