Résumé
Food insecurity in West Africa, particularly in the Sahel, is worsened by reliance on major crops like groundnut and millet. Underutilized indigenous legumes offer a solution for diversifying cropping systems, improving soil fertility, reducing water needs, enhancing nutrition, and promoting gender equity and economic stability. In South Eastern Senegal, diverse legume crops are cultivated, including Bambara groundnut (Vigna subterranea) and cowpea (Vigna ungiculata). Despite their benefits, these crops only represent small production volume and have no dedicated value chains. Such contradiction raises questions about possible lockers that bend down the development of such crops. It also emphasizes the need for an approach that combines multilevel and dynamic processes, engaging diverse stakeholders across scales—from the farm level to national or regional food systems. Fostering such a change requires to create the conditions for an endogenous process in which the different actors share their questions and knowledge to apprehend complex reality into a systemic thinking, to reflect and collaborate to create and achieve scenarios of change. This study investigates the application of a serious game, TerriStories®, to engage multi-stakeholder commitments for increasing the production of underutilized legume crops(Bambara groundnut and cowpea) in South Eastern Senegal. The participatory TerriStories® approach effectively engaged stakeholders, fostering dialogue and promoting innovative solutions. Participants identified challenges, reconsidered practices, and proposed actionable strategies. Sustained engagement with the TerriStories® approach is crucial for building momentum and ensuring lasting change. Establishing strategic collaboration with local actors will support autonomous and durable improvements in legume production.