>>715469715>but trains are literally on rails so how much skill is involved?Simulators usually involve the entire operation of the train (as well as the railroad levers and things like that, in some cases).
For example, in Train Simulator, you can start from scratch with your locomotive, from turning on the engines to warming them up correctly, doing the right thing to apply pressure to the brakes, etc. The intention is to simulate all the controls, so you need to know the entire procedure from start to finish. There is also the part of connecting the cars, or when you use more than one engine, making them all work together correctly. You need to really know how to operate the machines to do these things, know where each control is, when to activate them, etc.
The part of driving the train itself is usually the simplest. Depending on the simulator, however, you will need to understand how to read the signals to maintain the correct speed and follow all procedures without committing any violations.