This dissertation presents a framework for the simulation of a watershed environment as a serious game, where the commitment of a more realistic representation of characters, processes and environment is aligned with the usual features of entertaining games. The game aims to assist education and discussing topics on economic sustainability and environmental preservation. In addition to the physical simulation of the terrain, this work adds a new functionality to the simulator which makes it capable of simulating the interaction of the inhabitants of a small watershed with the terrain and the interaction between them as a game. The framework allows us to implement logic in the agents that simulate inhabitants, and the settings for updating prices and values of production.