I don't really understand Minecraft. It's a sort of virtual Lego. If I was a kid, I suspect I'd be madly into it like many others.
Anyway, you don't have to understand it to enjoy this video of a virtual "Big Boy" steam loco running through a landscape. It's the details like the spotters and shadows around the station that impress me. There's certainly a lot of work in here, even if it is all mouse'n'keyboard rather then at the workbench.