Subnautica 2 Save File — Where Saves Are Stored & Backups

Knowing your Subnautica 2 save file location is essential for backing up your progress, transferring saves between computers, or recovering corrupted data. Subnautica 2 stores save files in a specific directory depending on your platform — Steam, Epic Games Store, and Xbox all use different Subnautica 2 save file location paths. This guide covers where to find your Subnautica 2 save location on each platform, how to manually backup saves, and how to sync Subnautica 2 save backup files between devices. Regular Subnautica 2 save backups are the best insurance against losing hundreds of hours of base building.

Subnautica 2 save file location by platform

On Steam, the Subnautica 2 save file location is in your user AppData folder. The exact path is: %USERPROFILE%\AppData\LocalLow\Unknown Worlds Entertainment\Subnautica 2\ on Windows. On macOS, the Subnautica 2 save location is ~/Library/Application Support/Unknown Worlds Entertainment/Subnautica 2/. On Linux, it is ~/.config/unity3d/Unknown Worlds Entertainment/Subnautica 2/. The Subnautica 2 save file location for the Epic Games Store is identical to Steam since both use the same engine save directory. For Xbox and Windows Store versions, the Subnautica 2 save location is in the WindowsApp protected folder and cannot be directly accessed — backups must go through Xbox Cloud Save. The Subnautica 2 save location folder contains numbered subdirectories for each save slot (Slot_0, Slot_1, etc.), with files including the .save binary, a .json metadata file, and a screenshot.png thumbnail.

How to backup your Subnautica 2 saves

Creating a Subnautica 2 save backup is straightforward. Navigate to your Subnautica 2 save file location, copy the entire folder for the save slot you want to backup, and paste it to a safe location — an external drive, cloud storage, or a separate folder on your desktop. For automated Subnautica 2 save backup, create a script that copies the save folder every time you exit the game. A healthy Subnautica 2 save backup strategy keeps the last 3–5 backups with timestamps. The save files are small — a 50-hour playthrough typically occupies 15–25 MB, so storage space is not an issue for Subnautica 2 save backup archives. To restore a backup, copy the saved files back into the Subnautica 2 save file location folder, overwriting the existing save. Always exit the game completely before modifying the Subnautica 2 save location to prevent corruption.

Cross-platform save sync and tips

Cross-platform Subnautica 2 save file location transfer is possible between Steam on different operating systems but not between Steam and Xbox. To move a Subnautica 2 save backup between computers, copy the save folder to a USB drive or cloud storage, paste it into the same Subnautica 2 save file location on the target computer, and launch the game. The save will appear in the correct slot. Steam Cloud automatically syncs Subnautica 2 save backups across computers logged into the same Steam account, but manual backups are still recommended as insurance against Steam sync corruption. A common Subnautica 2 save location issue is that Steam Cloud may overwrite newer saves with older ones if sync timing is off — always check the timestamp before relying on cloud sync. For maximum safety, disable Steam Cloud for Subnautica 2 and manage Subnautica 2 save backup files manually using the folder location listed above. Corrupted saves can sometimes be repaired by loading the .json metadata file to recover the most recent checkpoint data.