Today, physicians take care of an aging population suffering from multiple chronic diseases and disabilities. Therefore, a good knowledge of functional assessment is required, and this topic should be addressed in the undergraduate medical curriculum. This article reports our experience with a seminar on functional assessment using an "aging game" as a pedagogic vector. This seminar is organized by geriatricians, occupational therapists and physical therapists. Medical students are exposed to situations where they experiment disabilities and try to elaborate compensatory strategies. Then, they reflect on a complex discharge project by analyzing a written clinical case. Finally, they are introduced to the use of validated functional assessment instruments. Evaluation indicated that this pedagogic approach is highly valued by students and fosters the acquisition of knowledge in functional assessment.