Debuted as RailWorks , succeeding the older Rail Simulator .
Runs on Windows XP/Vista with just 512MB RAM. Download TRAIN SIMULATOR 2021 PC Game 2009
Became Train Simulator 2012 , then 2013 , continuing this pattern until it was rebranded as Train Simulator Classic . Debuted as RailWorks , succeeding the older Rail Simulator
Generally requires a 64-bit OS and significantly more RAM and GPU power due to engine updates. 📥 Where to Download Trainz Simulator 2009: World Builder Edition Debuted as RailWorks
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.