The Windows operating system has changed quite a bit since then, and as a result, the way older app installers work has proven to be problematic. Running the Microsoft / Open Rails Train Simulator is a little different from other simulators, in that there are a lot of options available for add-ons (over 30,000 in our library alone), as well as companion applications that are used to create routes, activities and even new models.Īdding to the complexity, some of these applications date back to 2001, when MSTS was first introduced. Please add to the comments if you see things you'd like to add or correct.