savebridge

Move PC game saves between Steam and Xbox PC (Game Pass / Microsoft Store), in either direction and between accounts, including saves someone else shared. Windows only. There is a desktop app (app/) and a command line.

Disclaimer. savebridge is an unofficial fan project, not affiliated with Microsoft, Valve or any game publisher. It edits save files: it backs up everything it changes and verifies what it writes, but use it at your own risk. Only use saves you have the right to use, and don't use it to cheat in online or competitive modes.

Games confirmed working

"Verified" means a converted save loaded in the game. Every game converts in both directions and imports downloaded saves into either store; the Xbox → Steam direction is covered by tests on synthetic saves.

Game	Steam → Xbox	Notes
METAL GEAR SOLID Δ: SNAKE EATER	✅ verified
Destroy All Humans! (2020)	✅ verified	Steam and Xbox share one save folder; Reprobed saves are refused
CONTROL Resonant	✅ verified
Samson: A Tyndalston Story	✅ verified
The Blood of Dawnwalker	✅ verified
Call of Duty: Black Ops II (campaign)	✅ verified
Call of Duty: Ghosts (campaign)	⚠️ partly	the save loads; mission select and the Rorke Files live in the profile
Kingdom Come: Deliverance II	✅ verified
Crimson Desert	✅ verified
SILENT HILL 2 (2024)	✅ verified
FINAL FANTASY VII REMAKE INTERGRADE	✅ verified
FINAL FANTASY VII REBIRTH	✅ verified
Dispatch	✅ verified
Beast of Reincarnation	✅ verified
Cuphead	✅ verified
MOUSE: P.I. For Hire	✅ verified
Onimusha: Way of the Sword	✅ verified	Capcom encryption; the Xbox version must have saved once
Halo: Campaign Evolved	✅ verified	Solo checkpoints; the Xbox profile must have saved once

Not supported yet: Resonance: A Plague Tale Legacy (the Xbox encryption key is unknown), other Capcom RE Engine games (same converter, need their Xbox details). See research.md for how each game stores its saves.

Halo: Campaign Evolved is available as halo-campaign-evolved (alias halo), with Steam → Xbox loading confirmed in game. Build its separate Oodle decoder with ./native/build_ooz.ps1 (Visual Studio C++ tools and Git required), or set SAVEBRIDGE_OOZ to an existing ooz executable. Import checkpoints together with Progress.sav. The Xbox profile must have saved once so its player mapping can be recovered. Only the observed solo checkpoint layout is supported. Rebound checkpoints retain the original compressed chunks except where player IDs change. The default Steam destination is %LOCALAPPDATA%\Meteorite\Saved\SaveGames; native Steam folder discovery has not been confirmed on an installed Steam build.

Achievements

A converted save never stops achievements from unlocking, but it only unlocks what the game awards from that point on:

• Title-managed achievements (most games) are awarded by the game itself. Many games re-check them when a save loads or a chapter ends, so some may pop soon after loading an imported save.
• Event-based achievements (e.g. Halo MCC, Forza Horizon 3) are counted by Xbox Live's servers from events the game sends while you play. A save file can't carry that progress, so you have to do those things again.
• Story and ending achievements unlock for the parts you play after the save point. Pick a save just before what you still need.

The app shows which kind each of your games uses. More detail: research.md § 8.

Using it

Close the game first. Every write backs up the target to %LOCALAPPDATA%\savebridge\backups\ and reads the result back to verify it.

python -m savebridge games                                      # supported games
python -m savebridge list cuphead                               # saves on both stores
python -m savebridge convert cuphead steam-to-xbox --dry-run    # your own saves, this PC
python -m savebridge import cuphead C:\Downloads\save.zip --to xbox --slot-map 0:1
python -m savebridge backups                                    # backups made so far
python -m savebridge restore cuphead                            # undo the last write
python -m savebridge check halo --to xbox                       # import prerequisites
python -m savebridge check halo --from steam --to xbox          # local conversion prerequisites
python -m savebridge inspect C:\Downloads\save.zip               # recognize saves, report safely

• For Xbox, start the game once on your Xbox profile first. After writing, start it online so the save uploads; if the Xbox app reports a conflict, keep the copy on this PC.
• --only, --all, --slot-map, --steam-account, --xbox-account and --dry-run are explained by python -m savebridge <command> -h.
• Capcom games need savebridge\_native\dsss_find.dll; build it with native\build.cmd (Visual Studio C++ tools) or use a release build.

The desktop game page checks prerequisites and explains what needs attention before enabling conversion. Inspect save accepts a file, ZIP or folder (including an Xbox WGS folder) and lets you copy a report. Reports omit personal paths, account IDs and save payloads; inspect --json provides structured output. Use --game <id> to restrict recognition. Inspection and prerequisite checks never change saves or persist recovered account keys. A successful check still requires the normal conversion preview to validate the incoming save selection.

Development

• research.md: Xbox save internals and per-game formats.
• Adding a game: subclass Game in savebridge/games/ (most Unreal games only need a file list, see samson.py), register it in games/__init__.py, add tests with synthetic saves. Never commit real save files.
• Tests: python -m unittest discover -s tests -t .

License

MIT. Third-party code: THIRD_PARTY_NOTICES.md.