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Game Hub / Save Reference

Fallout: New Vegas Save Files & Tools

Fallout: New Vegas PC save location, backup, file-format, launcher, cloud-sync, and compatibility reference. This Game Hub documents save-file facts without implying that a game-specific Save Editor is available.

PC

01 / Overview

Save reference at a glance.

Game Hubs separate documented save-file facts from actual Tool support. A Game Hub can be useful even when no custom editor exists.

Developer
Obsidian Entertainment
Publisher
Bethesda Softworks
Platforms
PC
Save extensions
.fos

For New Vegas, the save file is only part of a reproducible modded setup. Back up the entire Saves folder and separately record the active mod list before changing load order or moving progress to another PC.

For this PC reference, the documented storage is Windows: %USERPROFILE%DocumentsMy GamesFalloutNVSaves. The known file or folder pattern is *.fos save files plus paired metadata/backup artifacts when present. New Vegas uses Bethesda Gamebryo save records with the .fos extension. Mods, DLC, load order, and script state can be embedded in progress, so a byte-level file match does not guarantee a safe modded restore.

Backup guidance: Close Fallout: New Vegas, let the launcher finish any synchronization, then copy the complete documented save directory to a dated folder outside the live path. Preserve companion files rather than selecting only the newest-looking record. Cloud support differs by storefront; keep an offline copy of the Saves folder and the mod/load-order context for modded games. Launcher and cloud context matters because The active Steam, GOG, Epic Games Store, Microsoft Store installation determines which local profile and cloud copy can overwrite the save. Identify the storefront and account before restoring files.

Compatibility and recovery should stay conservative. Treat saves as version-, storefront-, account-, and mod-sensitive unless the game or a separately verified migration workflow proves otherwise. A similar filename or extension is not evidence that two releases are interchangeable. If the expected progress is not visible, If progress is missing after a restore, confirm the active Windows account, storefront/profile, cloud state, and exact directory first. Restore the untouched backup before experimenting with individual files or older autosaves. SaveEditor.com only labels a game-specific editor as available when a separate linked Tool has a verified operational runtime; this reference page by itself is not an editor claim.

Compatibility note

Treat saves as version-, storefront-, account-, and mod-sensitive unless the game or a separately verified migration workflow proves otherwise. A similar filename or extension is not evidence that two releases are interchangeable.

02 / Save locations

Where the save files are stored.

Paths are displayed only when they have been explicitly documented for this Game Hub. Environment variables and launcher-specific differences should remain visible instead of being silently normalized.

Windows
%USERPROFILE%DocumentsMy GamesFalloutNVSaves

Launcher / edition differences

The active Steam, GOG, Epic Games Store, Microsoft Store installation determines which local profile and cloud copy can overwrite the save. Identify the storefront and account before restoring files.

03 / File format

Files, extensions, and format notes.

This section documents only known file names and structures. Format notes can later connect directly to SaveEditor.com parsers, checksum engines, and converters.

Extensions

.fos

File names / patterns

  • *.fos save files plus paired metadata/backup artifacts when present

Format notes

New Vegas uses Bethesda Gamebryo save records with the .fos extension. Mods, DLC, load order, and script state can be embedded in progress, so a byte-level file match does not guarantee a safe modded restore.

Launchers / stores

Steam / GOG / Epic Games Store / Microsoft Store

Cloud save notes

Cloud support differs by storefront; keep an offline copy of the Saves folder and the mod/load-order context for modded games.

04 / Tools

Actual linked Tool support.

No verified game-specific Save Editor is currently listed. This Game Hub remains useful for save locations, file details, backup guidance, and other linked utilities.

No active game-specific Tool is currently listed.

Planned and deprecated Tool records are intentionally excluded. The save-reference information on this page remains separate from Tool availability.

Browse all tools

05 / Backup

Protect the original before editing.

Save editing should be reversible. Keep an untouched copy outside the active save directory before replacing, converting, repairing, or modifying a save.

  1. 01
    Close the game.

    Avoid modifying a save while the game or launcher may still be writing to it.

  2. 02
    Copy the entire relevant save set.

    Some games use multiple files, profile folders, metadata, or companion files rather than one isolated save.

  3. 03
    Store the backup elsewhere.

    Use a separate folder or archive so cloud sync or the game cannot overwrite the untouched backup.

  4. 04
    Edit a copy, then validate.

    Follow the exact compatibility and processing notes on the Tool page before replacing the active save.

Game-specific backup note

Close Fallout: New Vegas, let the launcher finish any synchronization, then copy the complete documented save directory to a dated folder outside the live path. Preserve companion files rather than selecting only the newest-looking record.

06 / Troubleshooting

When a save is missing or rejected.

Start with reversible checks. Do not delete or overwrite the only copy while diagnosing a path, cloud-sync, version, or format problem.

Game-specific notes

If progress is missing after a restore, confirm the active Windows account, storefront/profile, cloud state, and exact directory first. Restore the untouched backup before experimenting with individual files or older autosaves.

A

Confirm the correct profile.

Games, launchers, and operating systems may keep separate save folders for different users, editions, or profiles.

B

Check cloud synchronization.

A cloud service can restore an older file or overwrite a local change. Preserve both copies before resolving a conflict.

C

Check Tool compatibility.

A matching filename does not prove a matching format. Verify platform, game version, extension, and Tool support state.

D

Restore the untouched backup.

If the game rejects a modified save, return to the original backup before attempting another change.

07 / FAQ

Fallout: New Vegas save-file questions.

Answers are generated only from visible Game Hub metadata and actual linked Tool states, plus universal backup guidance.

Where are Fallout: New Vegas save files stored?

The currently documented save locations are listed in the Save locations section above. Use the location that matches your platform or environment.

What save-file extension does Fallout: New Vegas use?

The extensions currently documented on this page are: .fos.

Does SaveEditor.com have a verified Fallout: New Vegas Save Editor?

No verified game-specific Save Editor is currently listed. This Game Hub remains useful for save locations, file details, backup guidance, and other linked utilities.

Should I back up the save before using a Tool?

Yes. Keep an untouched copy outside the active save directory before modifying or converting the file. Some games use multiple companion files, so back up the relevant save folder when in doubt.

Are there cloud-save considerations for Fallout: New Vegas?

Cloud support differs by storefront; keep an offline copy of the Saves folder and the mod/load-order context for modded games.

Editorial review

Game-specific metadata on this hub was last reviewed on 2026-08-08. Individual Tool pages maintain their own verification dates and compatibility notes.

Verification notes

Windows save location, file-boundary, launcher/cloud, and backup notes were reviewed against the linked game-specific references for Fallout: New Vegas. This Game Hub is documentation only and does not claim a new game-specific Save Editor.

Reference sources
  1. Reference 1 - www.pcgamingwiki.com

Related guides

Continue with reviewed save-file guidance.

Only reviewed, index-ready Guides explicitly related to this Game Hub are surfaced here.