In this chapter, a competency-based approach, based on the qualifications-based learning model (QBLM), will be presented, which makes it possible to store the acquired competencies and qualifications (CQ) in a so-called CQ-profile (CQP) while playing an educational game. The game and the course are based on a didactical structural template (DST), making it possible to switch between the course and the game. Before the educational game can be played, it must be checked whether a learner has all the required CQs for the course or learning unit in which the educational game is included. Therefore, this chapter shows an approach to how the CQPs can be implemented, and the data from the CQP can be used to check course prerequisites. Finally, a prototypical implementation with its evaluation and the remaining challenges will be presented in this chapter.