Some archives for unofficial versions include files like steam_emu.ini to change settings such as the game language.
You can often find a Free Starter Pack or purchase the game officially to ensure a safe experience and access to the Creators Club for liveries and scenarios. Common Uses for .rar Files in TSW3 Train Sim World 3.rar
If the file is a legitimate community creation, it likely contains: Some archives for unofficial versions include files like