Rocketrobotkorea.7z.004

The "Korea" tag implies this specific archive contains the Korean version of the game or assets specifically localized for the South Korean market.

In many cases, Korean or Chinese versions of N64 titles are associated with the iQue Player or rare localized physical releases. Preserving these versions is a high priority for the gaming community because they often contain unique translations or technical adjustments not found in the North American or Japanese releases. 3. Role in Digital Preservation RocketRobotKorea.7z.004

You cannot use .004 alone. You must locate and download parts .001 through .003 (and any subsequent parts). The "Korea" tag implies this specific archive contains

The extension .004 indicates that this is the fourth part of a "split" archive. Large digital collections are often broken into smaller pieces (volumes) to make them easier to upload, download, and store on various file-sharing platforms. The extension