If you are looking for a version specifically from 2009 because of an older PC, you may actually be thinking of . Unlike the Train Simulator series, Trainz focused more on world-building and layout design.
Debuted as RailWorks , succeeding the older Rail Simulator .
Became Train Simulator 2012 , then 2013 , continuing this pattern until it was rebranded as Train Simulator Classic .
Introduced a new collection of routes, including the Fife Circle Line (Scotland) and the Clinchfield Railroad (USA).
It seems there might be a mix-up in your search: and the 2009 version are actually the same core game evolving over a decade.
The franchise originally launched in 2009 as . Every year, the developers at Dovetail Games update the title to the current year (e.g., Train Simulator 2021 ) and offer a free core engine update to existing owners. 🚂 How the Game Evolved (2009–2021)
One major advantage of this series is that almost all DLC purchased back in 2009 still works in the 2021 (and current) version. 💻 System Compatibility