Nutrition internships provide the opportunity for college students to work in the field of their choice and receive hands-on training from nutrition professionals, preparing them for a job in healthcare following graduation. Professional knowledge courses for nutrition interns have mostly been lecture-based. This has led to passive learning, making it difficult for students to pay attention and to retain knowledge. In response, one clinical nutrition course was modified to include Game-Based Learning (GBL). Through this modified course, interns acquired knowledge and developed problem-solving skills. The games, training process and effectiveness of this course are the focus of this article. Based on the results, introduction of GBL to this course increased interaction, effectiveness and fun. In addition, it is possible to extend GBL to other healthcare-related courses.