The specific version of dated December 30, 2022 (v30.12.2022), likely refers to a minor hotfix following the major "2.0" or "Living Large" update released earlier that month.
To download this or any official version of the game, it is recommended to use authorized digital storefronts: Download Subnautica Below Zero v30.12.2022
: You can purchase and download the game directly through Steam . If you need to access a specific older version like the one from late 2022, you can use the Steam Console with specific manifest IDs from SteamDB . The specific version of dated December 30, 2022 (v30