Using tools like file or ExifTool to verify it is actually a RAR archive and not a renamed executable.
Usually contained MIDI music files, .mod tracker files, or city layout patches. SimCity.rar
In a modern security write-up, SimCity.rar would be treated as a "lure" used to trick users into downloading a malicious payload. Hashes: MD5/SHA256 identification. Using tools like file or ExifTool to verify
Knowing the source of the file will help in providing a more detailed step-by-step guide. .mod tracker files