Simulation Blender Game encapsulated by python application?

Hello everybody, How are you?
I have an animation created by Game Engine, it receives by Python a Coordinate File and moves some objects.
I want to encapsulate this simulation by Game Engine and put it inside a python software.
The system to be created by python will have different definitions and options of files that the user will select and then must be passed to my “simulator.blend”, after he should start the blender simulation without appearing the Blender GUI.

How can I “import” the “simulator.blend” into python and start the simulation when the user selects a button?