A free app for Android, by 3dinteger.

You can play a railway engineer in the Train and Rail Yard Simulator app, controlling freight trains through congested rail yards all across the map. To get your freight where it needs to go, split and build your trains by coupling and uncoupling rail cars and engines, then maneuver over tricky switch tracks. The Train and Rail Yard Simulator program offers numerous various game modes and maps, such as coupling and uncoupling rail cars and locomotives, corking railroad switches, objectives, and free roam mode. With this software, users may enjoy the rush of railroading in a number of ways, from difficult missions to a more laid-back free roam option.