Supported titles

Title	Read	Write	Evidence
Abiotic Factor	Yes	Yes	Shipped adapter (GamePassStorage.Adapters.AbioticFactor, built into wgs). Real sanitized stores and in-game use through Abiotic Editor
76 catalog titles (below)	Native layout known	Native layout known	Community-sourced mappings in GamePassStorage.Adapters.Catalog (built into wgs). Synthetic tests only; no real store checked here
BethesdaSoftworks.ProjectTitan_3275kfvn8vcwc (title not publicly confirmed)	Yes (container layer)	Multi-blob write tested on a sanitized copy	Real store, sanitized as tests/fixtures/RealMultiBlob. Container layer only: no adapter, payloads not interpreted, and no in-game round trip
Any other title	Unverified	Unverified	Works through the generic model. Needs real sanitized fixtures before a support claim, and an adapter to add game knowledge

Adapters

A title with an adapter gets more than raw container access: the adapter recognises the package, names container kinds, describes what a blob holds, names orphaned data and adds its own write gate.

Adapter	Package	Serves	What it adds
Abiotic Factor	GamePassStorage.Adapters.AbioticFactor (built into wgs)	PlayStack.AbioticFactor_3wcqaesafpzfy	Container classification (<World>-WC, <World>-WC-B, Profile*, Settings), the ABF_SAVE_VERSION table of contents read without decompressing, settings ini decoding, orphaned world names, and a gate that refuses while AbioticFactor* runs. World bodies are Oodle-compressed and Oodle is not bundled, so the adapter reports that instead of decoding.
Catalog	GamePassStorage.Adapters.Catalog (built into wgs)	The 76 families below	The native layout for wgs unwrap and wgs wrap. Payload knowledge for Palworld (below); the rest are described generically, which names the class of any Unreal (GVAS) save. wgs refuses writes while the title's own package runs (the package gate, which every title gets).

Every other title is served by the generic adapter: list, diagnose, extract, put, delete, restore, export, import and a generic inspect (size, SHA-256, content sniffing) all work. To add a title see Game adapters (plugins).

The catalog

GamePassStorage.Adapters.Catalog knows, for each title below, how its containers map to the files the Steam or Epic version keeps, so wgs unwrap gives you the save as the game itself lays it out and wgs wrap puts edited files back. Package family names and mappings come from two independent community tools, XGP-save-extractor (E) and XgpSaveTools (T), both MIT; they agree on every title they share. XGP-save-extractor's README supplies the evidence column where it reports one. Titles marked H were also checked against a real store on a contributor's machine (structure, and for DOOM: The Dark Ages the SlotFile version and both checksum sidecars). No converted save has been loaded in-game by this repository. Every layout is tested against synthetic stores shaped as the sources describe.

Title	Package family	Layout	Direction	Evidence	Source
Atomic Heart	FocusHomeInteractiveSA.579645D26CFD_4hny5m903y3g0	one-file:.sav	unwrap and wrap	reported working on Steam	E T
The Callisto Protocol	PUBGCorp.TheCallistoProtocolXB1_gsxfe54jwf950	one-file:.sav	unwrap and wrap	reported working on Steam	E T
Celeste	MattMakesGamesInc.Celeste_79daxvg0dq3v6	one-file	unwrap and wrap	unconfirmed	E T
Final Fantasy XV	39EA002F.FINALFANTASYXVforPC_n746a19ndrrjg	one-file	unwrap and wrap	reported working on Steam	E T
Fuga: Melodies of Steel 2	CyberConnect2Co.Ltd.FugaMelodiesofSteel2_zpv0gf6t8hz5r	one-file:.sav	unwrap and wrap	unconfirmed	E T
High on Life	2637SquanchGamesInc.HighonLife_mh7dg3tfmz2cj	one-file:.sav	unwrap and wrap	reported working on Steam	E T
Hi-Fi RUSH	BethesdaSoftworks.Hibiki_3275kfvn8vcwc	one-file:.sav	unwrap and wrap	reported working on Steam	E T
Manor Lords	HoodedHorse.ManorLords_znaey1dw2bdpr	one-file:.sav	unwrap and wrap	reported working on Steam	E T
MechWarrior 5: Clans	PiranhaGamesInc.MechWarrior5Clans_skpx0jhaqqap2	one-file:.sav	unwrap and wrap	reported working on Steam	E T
Remnant 2	PerfectWorldEntertainment.GFREMP2_jrajkyc4tsa6w	one-file:.sav	unwrap and wrap	reported working on Steam	E T
Solar Ash	AnnapurnaInteractive.SolarAsh_c96c51jf6wkvm	one-file:.sav	unwrap and wrap	reported working on Steam	E T
Yakuza 0	SEGAofAmericaInc.Yakuza0PC_s751p9cej88mt	one-file	unwrap and wrap	reported working on Steam	E T
Trials of Mana	39EA002F.TOMDF_n746a19ndrrjg	one-file:.sav	unwrap and wrap	reported working on Steam	E
The Alters	4063811bitstudios.TheAlters_gwy9gn5q9j1y6	one-file:.sav	unwrap and wrap	reported working on Steam	E T
The Elder Scrolls IV: Oblivion Remastered	BethesdaSoftworks.ProjectAltar_3275kfvn8vcwc	one-file:.sav	unwrap and wrap	reported working on Steam	E T
Indiana Jones and the Great Circle	BethesdaSoftworks.ProjectRelic_3275kfvn8vcwc	one-file:.sav	unwrap and wrap	unconfirmed	T
Lords of the Fallen	CIGamesS.A.LordsoftheFallen-PC_9609msxhzdsvj	one-file:.sav	unwrap and wrap	unconfirmed	T
Railroads Online	astragonSoftwareGmbH.RailroadsOnline_gq6wh0enzmg8j	one-file	unwrap and wrap	unconfirmed	T
Yakuza Kiwami	SEGAofAmericaInc.YakuzaKiwamiPC_s751p9cej88mt	one-file	unwrap and wrap	unconfirmed	T
Solarpunk	rokapublish.Solarpunk_6q4vfhsywtz4j	one-file:.sav	unwrap and wrap	unconfirmed	T
TCG Card Shop Simulator	OPNEONGAMES.TCGCardShopSimulator_19j6by82ahhzr	one-file:.json	unwrap and wrap	unconfirmed	T
Rematch	SLOCLAP.ProjectRuntime_cse8z5zpmcvkt	one-file:.sav	unwrap and wrap	unconfirmed	T
Chained Echoes	DECK13.ChainedEchoesRelease_rn1dn9jh54zft	blobs	unwrap and wrap	unconfirmed	E T
Chorus	DeepSilver.UnleashedGoF_hmv7qcest37me	blobs + .sav	unwrap and wrap	reported working on Steam	E T
Hades	SupergiantGamesLLC.Hades_q53c1yqmx7pha	blobs	unwrap and wrap	reported working on Steam	E T
Hypnospace Outlaw	NoMoreRobots.HypnospaceOutlaw_671zbmwb2bw9p	blobs	unwrap and wrap	reported working on Steam	E T
Just Cause 4	39C668CD.JustCause4-BaseGame_r7bfsmp40f67j	blobs	unwrap and wrap	unconfirmed	E T
Octopath Traveler	39EA002F.FrigateMS_n746a19ndrrjg	blobs	unwrap and wrap	unconfirmed	E T
Remnant: From the Ashes	PerfectWorldEntertainment.RemnantFromtheAshes_jrajkyc4tsa6w	blobs + .sav	unwrap and wrap	unconfirmed	E T
Sea of Stars	SabotageStudio.SeaofStars_p3aneehax6csy	blobs + .sos	unwrap and wrap	reported working on Steam	E T
Totally Accurate Battle Simulator	LandfallGames.TotallyAccurateBattleSimulator_r2vq7k2y0v9ct	blobs	unwrap and wrap	reported working on Steam	E T
Chants of Sennaar	FocusHomeInteractiveSA.ChantsofSennaar-Windows_4hny5m903y3g0	blobs	unwrap and wrap	unconfirmed	T
Avowed	Microsoft.Avowed_8wekyb3d8bbwe	blobs + .sav	unwrap and wrap	unconfirmed	T
Citizen Sleeper 2: Starward Vector	SurpriseAttackPtyLtd.CitizenSleeper2StarwardVector_8k24hnfn3vvj0	blobs	unwrap and wrap	unconfirmed	T
Crime Scene Cleaner	5901F20F.CrimeSceneCleaner_t06nbjdc8fw86	blobs	unwrap and wrap	unconfirmed	T
SnowRunner	FocusHomeInteractiveSA.SnowRunnerWindows10_4hny5m903y3g0	blobs + .cfg	unwrap and wrap	unconfirmed	T
Monster Train	69C22BB6.MonsterTrain_8ekbzbj4dakee	container-folders	unwrap and wrap	reported working on Steam	E T
Ninja Gaiden Sigma	946B6A6E.NINJAGAIDENSIGMA_dkffhzhmh6pmy	container-folders	unwrap and wrap	reported working on Steam	E T
Persona 5 Royal	SEGAofAmericaInc.F0cb6b3aer_s751p9cej88mt	container-folders	unwrap and wrap	reported working on Steam	E T
Persona 5 Tactica	SEGAofAmericaInc.s0cb6b3ael_s751p9cej88mt	container-folders	unwrap and wrap	reported working on Steam	E T
SpiderHeck	tinyBuildGames.SpiderHeck_3sz1pp2ynv2xe	container-folders	unwrap and wrap	reported working on Steam	E T
Wo Long: Fallen Dynasty	946B6A6E.WoLongFallenDynasty_dkffhzhmh6pmy	container-folders	unwrap and wrap	unconfirmed	E T
Dungeons of Hinterberg	CurveDigital.DungeonsOfHinterberg_1ezqdnbhnc70m	container-folders	unwrap and wrap	unconfirmed	T
Kingdom Come: Deliverance II	DeepSilver.77536C3FE941_hmv7qcest37me	container-folders	unwrap and wrap	unconfirmed	T
Phoenix Point	SnapshotGames.PhoenixPoint_xxvrk32m0sthm	container-folders	unwrap and wrap	unconfirmed	T
The Outer Worlds 2	Microsoft.OE-Arkansas_8wekyb3d8bbwe	container-folders	unwrap and wrap	unconfirmed	T
The Lamplighters League	ParadoxInteractive.ProjectWiseguy-PC_zfnrdv2de78ny	container-folders	unwrap and wrap	unconfirmed	T
Quantum Break	Microsoft.QuantumBreak_8wekyb3d8bbwe	container-folders	unwrap and wrap	unconfirmed	T
DOOM Eternal	BethesdaSoftworks.DOOMEternal-PC_3275kfvn8vcwc	container-folders, steam:<SteamID64>	unwrap and wrap	reported working on Steam	E T
DOOM: The Dark Ages	BethesdaSoftworks.ProjectTitan_3275kfvn8vcwc	container-folders, steam:<SteamID64>	unwrap and wrap	real store checked here	T H
Palworld	PocketpairInc.Palworld_ad4psfrxyesvt	palworld	unwrap and wrap	reported working on Steam	E T
Forza Horizon 5	Microsoft.624F8B84B80_8wekyb3d8bbwe	forza	unwrap and wrap	reported working on Steam	E T
Lies of P	Neowiz.3616725F496B_r4z3116tdh636	lies-of-p	unwrap and wrap	reported working on Steam	E T
Coral Island	HumbleBundle.CoralIsland_q2mcdwmzx4qja	backup-folder	unwrap and wrap	reported working on Steam	E T
Clair Obscur: Expedition 33	KeplerInteractive.Expedition33_ymj30pw7xe604	backup-folder	unwrap and wrap	reported working on Steam	E T
Blue Prince	RawFury.BluePrince_9s0pnehqffj7t	backup-folder	unwrap and wrap	unconfirmed	T
Arcade Paradise	WiredProductions.ArcadeParadise_hxzk6evwjr6sy	arcade-paradise	unwrap and wrap	reported working on Steam	E T
Railway Empire 2	KalypsoMediaGroup.RailwayEmpire2Win_e60j8nnj33ga6	railway-empire-2	unwrap and wrap	unconfirmed	E T
State of Decay 2	Microsoft.Dayton_8wekyb3d8bbwe	state-of-decay-2	unwrap only	reported working on Steam	E T
Cricket 24	BigbenInteractiveSA.Cricket24Win10_tqjv3vrxr8ppw	cricket-24	unwrap and wrap	reported working on Steam	E T
Control	505GAMESS.P.A.ControlPCGP_tefn33qh9azfc	control	unwrap and wrap	reported working on Epic	E T
Starfield	BethesdaSoftworks.ProjectGold_3275kfvn8vcwc	starfield	unwrap only	reported working on Steam	E T
Fallout 4	BethesdaSoftworks.Fallout4-CoreGame_3275kfvn8vcwc	fallout-4	unwrap only	unconfirmed	T
One Lonely Outpost	FreedomGames.OneLonelyOutpostGame_0c9x75n11d8wg	one-lonely-outpost	unwrap only	reported working on Steam	E T
Galacticare	TheCultGamesLtd.Galacticare_vnassb3anythc	galacticare	unwrap and wrap	unconfirmed	T
Balatro	PlayStack.Balatro_3wcqaesafpzfy	balatro	unwrap and wrap	unconfirmed	T
Hollow Knight: Silksong	TeamCherry.HollowKnightSilksong_y4jvztpgccj42	silksong	unwrap and wrap	unconfirmed	T
Metaphor: ReFantazio	SEGAofAmericaInc.Pae22b02y_s751p9cej88mt	metaphor-refantazio	unwrap and wrap	unconfirmed	T
Ninja Gaiden 2 Black	946B6A6E.NINJAGAIDEN2Black_dkffhzhmh6pmy	ninja-gaiden-2-black	unwrap and wrap	unconfirmed	T
Scorn	KeplerInteractive.1439274AB3A46_ymj30pw7xe604	scorn	unwrap and wrap	unconfirmed	T
Roadside Research	OroInteractive.RoadsideResearch_z7bgc74zqm87r	all-blobs-flat	unwrap and wrap	unconfirmed	T
Persona 3 Reload	SEGAofAmericaInc.L0cb6b3aea_s751p9cej88mt	persona-3-reload	unwrap and wrap	unconfirmed	T
Like a Dragon: Ishin!	SEGAofAmericaInc.ProjectMacan_s751p9cej88mt	like-a-dragon:png	unwrap and wrap	unconfirmed	E T
Like a Dragon Gaiden: The Man Who Erased His Name	SEGAofAmericaInc.l1b05f489e_s751p9cej88mt	like-a-dragon:dds	unwrap and wrap	unconfirmed	E T
Yakuza: Like a Dragon	SEGAofAmericaInc.Yazawa_s751p9cej88mt	like-a-dragon:dds	unwrap and wrap	unconfirmed	E T
Call of Duty (HQ)	38985CA0.COREBase_5bkah9njm3e9g	one-file	unwrap and wrap	real store checked here	H

DOOM: The Dark Ages and DOOM Eternal keep a .checksum beside each game_duration.dat (the data's MD5 with its four u32 words XORed, 8 and 4 bytes). The adapter recomputes it on every write, whether by put --blob, import, wrap or the library, so an edit never leaves a stale checksum. --layout steam:<SteamID64> unwraps each slot's four files AES-GCM encrypted for that Steam account (SlotFile version 11 for The Dark Ages), and wraps a Steam slot back into an existing Game Pass slot (version 10), as XgpSaveTools does.

Palworld also has payload knowledge: wgs inspect reads its .sav wrapper (PlZ, save type 0x31 zlib or 0x32 zlib twice, optionally behind a CNK prefix, as palworld-save-tools reads it, MIT) and names the GVAS class inside, and its codec decodes a save to the GVAS bytes for an Unreal save editor. Re-wrapping is not offered yet: which save type each file must use is not established.

Layout notes:

• one-file[:suffix] takes single-blob containers only. The source tool takes the first blob of any container; a multi-blob container here is left out and reported instead.
• blobs takes the store's first container, as the source does; other containers are left out.
• Lies of P drops a numeric prefix, so wrapping only replaces existing saves. Railway Empire 2 leaves the description blob out; an existing container keeps its own, a new one has none.
• Starfield, State of Decay 2 and One Lonely Outpost lose what wrapping would need (part sizes, blob path prefixes, the JSON envelope), so they only unwrap.

Reported not to move file for file (per XGP-save-extractor): A Plague Tale: Requiem, ARK: Survival Ascended, Chivalry 2, Death's Door, Forza Horizon 4, Neon White and Tinykin. It also lists the Like a Dragon titles and Persona 3 Reload as incompatible, while XgpSaveTools maps them; the catalog includes them, marked unconfirmed, with that note. Not yet in the catalog: Brotato (its saves are a bundle that needs a parser) and Dragon Ball Xenoverse 2 (XgpSaveTools only exports it raw). Newer GDK titles keep file-oriented saves under XboxGames\GameSave\pgs, a different layer from wgs. wgs pgs reads it (find, list, extract, back up; no writes); the only game id known so far is Forza Horizon 6's (16D460).

A title not in the catalog still unwraps with container-folders (lossless for any store) or a layout named with --layout. To promote a catalog title to a full adapter (payload knowledge, a process gate), contribute a sanitized store; see below.

What "verified" means here

Abiotic Factor is the only title verified so far. The format knowledge in this library comes from real Abiotic Factor stores analysed byte by byte, cross-checked against independent implementations (see the format reference).

Other Game Pass titles use the same container layer, so they may well work, but that is not evidence. The library's own in-memory tests exercise the API boundary with synthetic stores; they do not prove that a particular game's layout is supported. Multi-blob manifests are verified against one real store (see the format reference); different manifest versions are unseen. WgsStore reports layouts it does not understand as UnsupportedLayout rather than guessing.

Trying it on another title

Safe, read-only steps first:

wgs diagnose <store>
wgs list <store>
wgs backup <store> <backup-folder>

If diagnose opens the store and reports nothing alarming, reading with wgs extract is the next step. Only try a write on a title you have backed up, and remember that whether Xbox accepts a rewritten container in-game needs a real sync on a real machine. Use wgs snapshot and wgs compare around that sync to record what happened.

Contributing fixtures

A sanitized real store is the most valuable contribution. To make one:

1. Close the game and the Xbox app.
2. Sanitize it with wgs sanitize <store> <out-folder>. It copies containers.index and every container.N byte for byte, zeroes the index's root GUID (its meaning is undocumented), and replaces every blob file with zero bytes of the same length. Name the output folder something neutral such as 0009000000000002_00000000000000000000000000000001: the store's own folder name is your account id (XUID). The index still records the package family name, container names and ETags; check that you are happy to share those.
3. Confirm wgs diagnose still opens the sanitized copy.
4. Open an issue or pull request at ChristopherVR/GamePassStorage with the game name, the platform (Xbox app or Microsoft Store), whether you saw multiple blobs per container, and what you verified (read only, or a round trip in-game).

Tests skip gracefully when a fixture is absent, so fixtures are always optional for contributors. See Contributing.