The community-based learning model via game simulation to promote community public health diagnosis skills, or CBL model via game simulation, is a research tool that was devised based on the concepts of public health diagnosis using the seven community tools (geo-social mapping, genogram, community organization chart, local health system, community calendar, local history, and life story) combined with the simulation game-based learning. The learning of this style encourages learners to learn and conduct activities in virtual environment of metaverse. In addition, it is believed that this will help promote learners' community public health diagnosis skills and systematic thinking skills as well. This study is intended to design the CBL model via game simulation as a guideline to further develop the CBL system via game simulation with self-directed learning to promote community public health diagnosis skills. The sample group are nine experts who are experience in design of instruction models. The tools employed in this research consist of (1) the CBL model via game simulation, and (2) the evaluation form on the suitability of the CBL model via game simulation. This study shows that (1) the overall elements of the CBL model via game simulation is at highest level, and (2) the overall suitability of the elements of the CBL model via game simulation is at highest level as well.