At the moment, the main research direction of the COFELET project regards the mannner that COFELET compliant games will seamlessly integrate the well known cyber security methodologies and standards; and how much of this knowledge will be applicable and reusable across multiple cyber security serious games. To this end, we aim at proposing an ontology that constitutes a universal knowledge model for the COFELET compliant games. The COFELET ontology will provide an analytical description of the key concepts related to COFELET games and their relationships.