In a method for controlling sequential object-oriented system-simulations, presentation of an object of a group of objects to an instance-to-class is carried out in the following manner. The instance is produced by adjusting at least one parameter in the part of a simulation program. The instances produce and treat events for simulating a communication between objects, the simulation process being controlled by the activation of instances. The simulation process control is carried out according to a cycle consisting of determined cycle steps, the events being recorded in an event-recording area which is assigned to a target instance.