I was asking in a Rolling Line forum how to create a railway route in that virtual reality train model game and the person told me that it could be done using Blender GIS. I don't know if it could be used as an alternative in route creation for Train Simulator Classic.
It is a quick and dirty method of creating buildings for TSC. But I do not recommend it since it needs alot of unique textures and bad topology. And if imported from Google maps you can't share that assets anyway. But it works great as reference for creating buildings in Blender.