CODEX (a legendary warez group that officially retired in early 2022).

Scene groups like CODEX do not have official websites; they distribute through private top-sites. Any site claiming to be the "Official CODEX website" is fake.

The .rar extension indicates a compressed archive, typically containing an ISO image of the game and the "crack" files needed to bypass DRM (Digital Rights Management).

Files labeled with "CODEX" on public torrent or forum sites are frequently used as shells for malware.