In cybersecurity competitions (CTFs) or forensics training, a file like SimCity.rar is often used as an artifact found on a suspect's machine.
The filename appears in historical logs of from the late 90s, where RAR was the preferred compression format for game soundtracks and small software mods.
Checking for data hidden inside city save files or game textures (common in games like SimCity 4 ).
Based on the most likely scenarios, here is a write-up structure for investigating such an archive: 1.