Here is the key information:

: To ensure game stability and account security, it is always recommended to download and its updates directly from official retailers like Xbox Store Steam Deck Compatibility : Official builds (such as for Steam Deck and SteamOS. troubleshooting

It sounds like you’re referring to a split archive file ( Palworld.Build.17082883.Win64.Public.7z.002 ) — part of a multi-part .7z archive.

To the average user, it was nonsense—a string of technobabble. But to Elias, a digital archeist and moderator for the "Gray Archive" (a preservation group dedicated to saving fleeting game versions), it was a relic.