SFM25 is an HTA (HTML Application) file, which means it runs through the Windows scripting host. : You can find the latest version on community hubs like Elvas Tower Extraction
For the uninitiated, MSTS uses .s files (Shape files) to define the 3D geometry of everything you see in the simulation—trees, houses, stations, and terrain objects. These files are compiled and notoriously difficult to edit once created. msts shape file manager 25 work