Résumé
Serious games have so far hardly explored the issue of water quality protection in agricultural catchments, while it is key to succeed agroecological transition in this type of landscape, in order to keep agricultural land uses while drastically decreasing chemicals to reach the rivers. Complexity of factors to be represented explain this lack of experience with games to explore this situation in a strategic and collective way. We developed CAUSERIE a metagame to be specified in various agricultural catchment to explore transition pathways that include collective action aside individual practices improvement. It worked out the complexity of this issue through time representation at the scale of crop rotation and the use of a GIS-based model to compute consequences of players' choices. Interface with this computer is mediated by one dedicated facilitator, decreasing the capture of players attention by the screen interface, as reported in other examples of computer assisted game simulation. Initial sessions of these games are promising as they could point out the difficulty to explore solutions on a collective basis even though these might be more efficient, but unfitting professional biases.