Games are not available for Vensim PLE.
Games are a way of actively engaging in the progress of a simulation. Games are examples of the "flight simulator" approach, where the user participates in decisions that affect the simulation outcome for each step in time. A Vensim simulation model can be run as a game by stepping through time and making changes to gaming variables along the way. In contrast, a normal simulation model runs through the complete time span based on the initial setup of the model.
