MaSzyna Train Simulator has improved over the years and I decided to give it another go, glad I did because I am really enjoying it.
The graphics are not as good as some other simulators but this is free.
Line 61 is very good.
It will take a bit of patience to get it up and running.
Setting up loco's/Units can be a bit flustrating sometimes but stick with it and you will get there in the end.
Manual inc installation instructions-
Follow instructions in this thread to update routes -