In the context of a serious educational game that motivates children to adopt more sustainablehome-to-school mobility habits, we designed and implemented a collaborative multi-player mutual insurancesystem, with the intent to support low-performing players with the help of high-performing ones. As apreliminary step towards a field study evaluating this new game mechanic, in this paper we present the designand the development for an automatic calibration of the system, simulating the effects of

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... he choices for eachparameter in the player's game progression.