In strategic prospective, scenario thinking and negotiation processes, the analysis of the actor game plays an important role. Such an analysis intends to rank the stakeholders? positions on many strategic issues, assess the convergences and divergences, and anticipates coalitions and conflicts. Many models and tools have been proposed and used which rest on matrix analysis, game theory and simulation. The paper examines two of them: Mactor, a model of scenario planning, and a negotiation model derived from a game theory based political decision model. The paper detects their flaws, similarities and differences. Based on this comparison, the paper proposes a new model, called MASAM, with the advantages of both, but without their detected flaws. The model and its associated tool have been applied for assessing the public WLAN landscape. The paper sketches the first results which have to be integrated in a more sophisticated scenario analysis.