Subnautica: Below Zero Save File 100% – Story Complete + All Blueprints + All Biomes

Verified & Safe PC (Steam) Updated July 2026 Story Complete

100% complete save file for Subnautica: Below Zero PC. The full story is completed, every blueprint is unlocked, all Arctic biomes are explored, the complete PDA database is scanned, and every achievement is earned.

Save File Details

Game	Subnautica: Below Zero
Developer	Unknown Worlds Entertainment
Platform	PC (Steam)
Version	Latest (full release)
Completion	100% — Story Complete + All Blueprints + All Biomes Explored
Steam App ID	848450
Save Path	C:\Users\[Username]\AppData\LocalLow\Unknown Worlds\SubnauticaZero\SubnauticaZero\SavedGames\
Save File	slotX folder (your active save slot)
File Size	~6 MB (ZIP)
Last Updated	July 2026

What's Included

Full story completed

All blueprints and fragments scanned

All Arctic biomes explored

Complete PDA database

All vehicles unlocked (Seatruck modules, Snowfox)

All base modules unlocked

All resource types collected

All achievements unlocked

All story audio logs found

Full creature database entries

subnautica-below-zero-100-save.zip ~6 MB Save slot included Virus-free verified

How to Install

Important: Subnautica: Below Zero uses Steam Cloud by default. Disable it before replacing your save, and back up your existing save slot first.

Close Steam and Subnautica: Below Zero completely.

In Steam, right-click Subnautica: Below Zero → Properties → General → disable Steam Cloud.

Navigate to %userprofile%\AppData\LocalLow\Unknown Worlds\SubnauticaZero\SubnauticaZero\SavedGames\.

Backup your existing save slot folder by copying it to your desktop.

Download and extract the .zip file, then copy the save folder into place, replacing the existing slot.

Launch Subnautica: Below Zero and continue the included save from the main menu.

Your character loads in with the story complete, every blueprint known, and the Arctic biomes fully explored.

Below Zero vs. the original Subnautica: Below Zero is a standalone story set on a different part of planet 4546B, focused on the Arctic biome rather than the original's tropical ocean. This save is specific to Below Zero and is not compatible with the original Subnautica's save format.

Frequently Asked Questions

Is this Subnautica: Below Zero save file safe to use?

Yes. It's a single-player game with no PvP or anti-cheat concerns. A save only affects your own game.

Where is the Below Zero save file located on PC?

At C:\Users\[Username]\AppData\LocalLow\Unknown Worlds\SubnauticaZero\SubnauticaZero\SavedGames\, inside your slot folder. Steam App ID 848450.

Is this compatible with the original Subnautica saves?

No, Below Zero is a separate standalone game with its own save format and story — this save is specific to Below Zero only.

Are all blueprints unlocked?

Yes, every fragment-scanned and story-gated blueprint is unlocked, including all Seatruck modules and the Snowfox hoverbike.

Will this affect other players?

No, Subnautica: Below Zero is entirely single-player, so a save file only affects your own game.

Do I need to disable Steam Cloud first?

Yes, to prevent your new save from being overwritten by an old cloud sync on next launch.

About Subnautica: Below Zero

Subnautica: Below Zero is an underwater survival adventure developed by Unknown Worlds Entertainment, released in full in May 2021 as a standalone follow-up to 2018's Subnautica. Set on the Arctic region of planet 4546B, players control researcher Robin Ayou investigating her sister's death while surviving in frigid waters and exploring both underwater and above-ice environments.

The core survival-exploration loop carries over from the original — scanning fragments to unlock blueprints, managing oxygen and temperature, and building bases — while adding new traversal options like the Snowfox hoverbike for above-water Arctic terrain and a more narrative-forward story with voiced dialogue throughout.

Unknown Worlds supported Below Zero through a lengthy Early Access period before its full launch, refining the story and biomes based on community feedback. It remains shorter than the original Subnautica but is widely considered a worthy continuation of the underwater survival formula.

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