If you are looking to change the language of the game to English:
When Blizzard Entertainment released Diablo II: Resurrected (D2R) in September 2021, it was hailed as a faithful modernization of a classic. However, beneath the shiny new 3D graphics engine lay the unchanged heart of the original game—the legacy code that defined the ARPG genre.
For data miners, modders, and legal enthusiasts, the specific build identifier 1.67312 (often associated with the initial PC release revision) became a focal point of a significant intellectual property dispute regarding the GNU General Public License (GPL). diablo ii resurrected 1677312 eng gnu free
In piracy contexts, “free” often just means “no cost,” but combined with “gnu,” the uploader may be making a hacktivist statement: Even proprietary classics can be freed from their digital shackles.
This looks like a numeric identifier. In context: If you are looking to change the language
Given the rest of the string, it’s likely a unique release identifier used by a piracy group or a file indexer (like an HTTP directory listing with file size in bytes).
GNU is a recursive acronym for “GNU’s Not Unix” – a free software operating system and collection of tools (GPL license). However, Diablo II: Resurrected is proprietary, closed-source software with zero GNU components. This looks like a numeric identifier
Why would a pirate release include “gnu”?
A redistribution package of Diablo II: Resurrected labeled "1677312 ENG GNU FREE" — likely an unofficial repack or mirrored archive claiming English language files and a "GNU/free" redistribution status.