The "Index of Contact 1997 Repack" appears to be a re-release of an earlier title, claimed to offer improved features or quality.
Repacks often remove the need for a traditional installer, allowing users to simply extract the files and play.
After two hours of scraping through open FTP indices (yes, they still exist), I landed on a server with a clean file tree:
When a web master configures a server but forgets to include an index.html or index.php file in a folder, the server automatically displays a bare-bones list of all files contained within that directory.
A "repack" is more than just a pirated copy; it is often a labor of love by the community to ensure functionality. A good repack of a 1997 game usually includes: