The Ga-Mampa wetland, like many small scale wetlands in Southern Africa is threatened by human activity. In the last ten years, due to agriculture pressure, the natural vegetation has decreased to occupy less than 20% of the wetland area. Moreover, the agricultural practices are harmful for the wetland health and are degrading the soil organic matter. The Wet-WAG role-playing game created by Irstea under the WETwin European project aims at providing the basis for discussions among stakeholders, and raising their awareness on wetland management stakes. After a brief presentation of the case-study and a literature review on the use of role-playing games for natural resources management, the report describes the game development process. Wet-WAG is based on the generic platform WAG, developed by Cemagref (now Irstea) and Cirad for the participative management of water resources at catchment level. Existing research reports on the case study were used to calibrate the game. Several methods were mobilized to integrate inputs from the widest range of stakeholders (focus group discussions in Ga-Mampa, and interviews of provincial government representatives). Several testing sessions were organised with researchers, students and local farmers. The report then describes the elements of the game (board, role cards, activity cards, monitoring sheets) and relates a typical game session. Improvements brought to the initial version of the game are detailed. The use of Wet-WAG infor the participatory assessment of wetland management solutions is described and main outcomes presented. Directions for further improvements and recommendations for future use of the game and adaptations to other case studies are suggested in conclusion.