Pretty sure the developers of Factorio made a train game based around the train system in Factorio. Can't for the life of me remember its name but it looks rather good
Edit to add link - https://www.sweettransitgame.com/
That said, they're also giving it major updates/overhauls in the upcoming update, so this one would be falling behind if there's no good relationships between the two.
It is not very good. The game design is just and, failing to be either a good train sim or an interesting strategy game.
It basically flopped in early access.