Game-Based Learning is a modern field of technology-enhanced learning covering several sub-fields such as game-based training. Learning, in general, and training, in particular, may be enormously more effective, if the process adapts to the particular needs of the human learner or trainee. The crux is that an e-learning system, in general, or a game deployed for learning resp. training, in particular, for being able to adapt needs to learn about the needs and desires of the human addressee. Essentially, adaptive systems are learning systems. Consequently, the design of any adaptive training systems requires an anticipation, first, of when and how to learn about the human trainee and, second, of when and how to adapt to the human trainee's particular needs and desires hypothesized. When game-based learning and/or training goals and tasks are ambitious, related systems are easily becoming complex. Storyboarding is the methodology of the systematic reliable design of involved game-based training applications. The work reported has been developed for and is deployed by a governmental agency in charge of training executive staff in disaster management.