Railroads Online.7z.003 -

If you are trying to install custom maps or save files, they should end in .sav and be placed in %localappdata%\arr\saved\savegames .

Community reports indicate that pirated versions of this game circulate online in split archive formats like this. Railroads Online.7z.003

💡 Never run .exe files extracted from split archives found on forums or third-party "free" sites, as they are a primary vector for identity theft. If you are trying to install custom maps

A split 7-Zip archive. The .003 means it is the third part of a larger file. Railroads Online.7z.003

The file "Railroads Online.7z.003" is from official stores like Steam or the official website .