Because Windows and macOS do not natively support the RAR format, you will need a third-party utility:
Right-click the file and select "Extract Here" or "Extract to folder". Mass-Effect.rar
The file is a compressed archive typically containing assets, mods, or installation files related to the Mass Effect science-fiction role-playing game series developed by BioWare. Typical Contents Because Windows and macOS do not natively support
If the archive contains a mod, it is often best to import it directly through a tool like the Mass Effect Modder (MEM) or the ME3Tweaks Mod Manager rather than extracting it manually. Mass-Effect.rar
Use WinRAR (official developer) or 7-Zip (open-source).
Extractors for 3D modeling may use archives to store meshes and textures for use in external programs like 3ds Max. How to Open and Extract