Creative Assembly. (2010). Napoleon: Total War [Digital Archive: Napoleon.Total.War.zip]. Internet Archive. Retrieved from [Insert URL here].
In the context of digital preservation, the "paperwork" for this file is the generated by the archivist. This includes: File: Napoleon.Total.War.zip ...
If you need to reference this file in a formal context (APA/MLA), use the archival citation format: Creative Assembly
Digital signatures that prove the file is a "proper" or 1:1 copy of the original software, ensuring it hasn't been tampered with or corrupted. File: Napoleon.Total.War.zip ...
Usually identifies the original physical media (e.g., a 2010 PC DVD-ROM) from which the .zip was created.