Community reference on delisted Xbox games, unobtainable achievements and how to keep them playable.
UW9 console packages
UW9 packages are encrypted Xbox console games that only a console holding the licence can install. Once a title is hard delisted no console can ever be re-licensed for it, so every title below is either already lost or one delisting away from it. The list is what XCT.live has captured so far.
Why some owned Xbox games can no longer be installed anywhere — and the games it affects.
Hard delists: why an owned game can vanish completely
When Microsoft hard-delists a title it removes its catalogue entry entirely — not just the store page. Everything that resolves a game routes through that entry, so removing it breaks every install path at once:
Windows can’t install it. The Store’s own install pipeline (AppInstallManager) returns 0x80190194 — “no such product” — because there is nothing in the catalogue to resolve, even for an account that owns it.
No licence can be issued. The licensing service resolves through the same catalogue entry. Once it’s gone, no machine and no console can be granted a fresh licence — ownership is intact, but there is nothing left to redeem it against.
Delisting is not revocation. Your entitlement survives (a live licence still reads 9999-12-31). Microsoft keeps the receipt and deletes the shop.
UW9 games: why they can’t be sideloaded, and can’t run without a licence
A UW9 package is an Xbox console game captured from a drive — an encrypted .xvc container, not a PC app. Two hard limits apply:
Not a PC packageWindows can only Add-AppxPackage a plain/dev-signed package. A retail .xvc is encrypted, so a PC cannot install it — sideloading is not possible.
Needs a content keyDecrypting it needs the ClipSvc content key, which is only ever written when the title is installed on a machine or console while licensed. No install, no key.
Console needs the licenceAn Xbox in Dev Mode installs unencrypted/dev packages only. A retail .xvc installs on a console only if that console holds the licence — which, after a hard delist, can never be issued again.
So a UW9 game backed up from a drive is only re-installable on a console that already holds its licence (or already has the key). Once a title is hard-delisted, any copy whose key was never captured is unrecoverable — nobody can be licensed for it again.
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XCT Intel · decoded from the Xbox PC app 2610.1001.5.0
MYTHICACHIEVEMENT
Xbox’s new top completion award — what it takes
Base game achievementsDLC not in the ruleServer data live · counts match Xbox
The Xbox app works out Mythic from a group of achievements that it calls BaseGame. The unlock toast says “Unlocked all N achievements in the original game”. The game page has a “Required for Mythic achievement” filter, and it labels every achievement outside the group as “Add-on”. DLC achievements are not in the BaseGame group, so they do not count. The app counts achievements, not Gamerscore. It is not a “100% Gamerscore” reward.
What we found, and how sure we are
In app code means the text or logic is in the shipped Xbox app. Our reading means we worked it out from that code. Microsoft has not confirmed it. Reported means a news report quoted a source with knowledge of the feature. We did not find it in the app code.
In app codeThe name on screen is “Mythic achievement”. The toast title is “Mythic achievement unlocked”. The toast text is “Unlocked all %1$u achievements in the original game”. The fallback text is “Unlocked all achievements in the original game”.
In app codeAchievements now belong to achievement groups. Each achievement gets a groupIds list. Each game gets a completion block with its groups.
In app codeA group has a groupType. The only type the app acts on is BaseGame. The log line is: “Ignoring non-BaseGame AchievementGroupCompletion notification”.
In app codeA BaseGame group has achievementIds, unlockedAchievementIds, isComplete and completedTime. The app checks them: “BaseGame group … reported isComplete=%d with %u of %u achievements unlocked”.
In app codeThe game page shows a BaseGame progress bar (“X/Y”; a screen reader says “X of Y original achievements unlocked”). It has a “Required for Mythic achievement” filter. Achievements outside the group get the label “Add-on”. When the group is done it shows “All original achievements completed.”
In app codeWhen you finish the group, Xbox Live sends a push notification of type AchievementGroupCompletion. The app then plays the Mythic animation and the Mythic sound. The payload has payloadVersion 1, titleId, groupId, groupType, completionTime, achievementsInGroup and titleName.
In app codeAll of this is behind the feature flag EnableAchievementGroups. The public flag service does not list it yet.
Our readingMythic = unlock every achievement in the game’s BaseGame group. The app calls the BaseGame group “the original game” and everything else “Add-on”. So DLC packs are outside it.
Our readingMicrosoft decides on its servers which achievements go in the BaseGame group, one game at a time. The app only reads the list. Microsoft can put an achievement in or take it out, and the app will follow.
Now official 29 Sep 2026
Xbox announced Mythic Achievements for Xbox Insiders on Xbox Wire. The rule we had decoded from the app is now confirmed word for word, and the earlier “reported” points below are official.
“You earn a Mythic Achievement when you complete all original achievements for a game. Achievements added later through DLC or updates aren’t required, and once you’ve earned Mythic status, it’s yours to keep.”
OfficialBase list only. Every original achievement. DLC and title-update achievements are not required.
OfficialKept once earned. After you earn Mythic status it stays yours, even if the game’s achievements change later.
OfficialRetroactive. Mythic Achievements have already been added to eligible games you finished in the past, including Xbox 360 titles.
OfficialYour path to Mythic. A progress bar at the top of each game’s achievement list shows how close you are, with an option to focus only on the original achievements you still need. Achievements added later are tagged “add-on”.
OfficialGaming tab. A new tab on your profile shows your achievements and Gamerscore milestone badges. Mythic Achievements stand out in your achievement history with a heroic frame.
OfficialFriends. You can open a friend’s Gaming tab to see which games they have taken to Mythic.
The unlock notification.An achievement list with every original achievement complete.The path to Mythic, with “add-on” tags.Mythic Achievements in your history, in a heroic frame.
Images: Xbox Wire, 29 September 2026.
What Xbox sends now 30 Sep 2026
The Mythic data is now live on Xbox’s servers, for every player. We read it and checked it against console screenshots. Since 30 September the Mythic count on XCT is Xbox’s own number.
Live dataYour Mythic count. Xbox’s title history (titlehub.xboxlive.com, contract 2) now returns an achievementSummary with mythicsUnlocked, totalAchievementsUnlocked and totalRareAchievementsUnlocked. mythicsUnlocked is the number under “Mythic Achievements” on your Xbox profile. We checked it on five members: 2,945, 1,902, 661, 888 and 1,016, all equal to their consoles.
Live dataPer game. Each game in the title history now has isMythic, baseGameCount and baseGameCompleted. The achievements service (contract 6) returns the full BaseGame group: the achievement IDs, the unlocked IDs, isComplete, completedTime and the Gamerscore in the group. One call can answer up to 100 games.
Live dataHidden games count. Mythics in games you hid on Xbox (“Hide from profile”) are in your total. The games themselves stay hidden, on Xbox and on XCT.
Our readingThe total is a little more than the games. If you add up every game Xbox marks as Mythic, you usually get a few less than the total (for example 865 games against a total of 888). Xbox counts some Mythics it does not list game by game. So XCT shows Xbox’s total as your count, and lists every game it can name in your Mythic Vault.
Live dataCompilations. Xbox gives a compilation (for example Halo: The Master Chief Collection) one BaseGame group, so it is one Mythic on Xbox.
Xbox PC app 2610.1001.5.0 30 Sep 2026
In app codeMythic is switched on by the feature flag mythic-enabled, which is now on.
In app codeThe achievements panel (Game Bar) has an original achievements filter button and new text: “%1$d of %2$d original achievements unlocked.”, “No original achievements found.”, “Required for Mythic achievement” on each base achievement, and “Mythic achievement unlocked”.
In app codeThe app refers to a new icon, MythicAchievementSolid, in its Xbox icon font. The font files in this version do not have a Mythic star yet.
Our readingThe app does not ship the green laurel heroic frame as a file. The unlock toast art (intro, idle and outro) is the same as before. The frame on game art is probably drawn by Xbox’s servers or web pages, not by files in the app.
See yours in your Mythic Vault. Every profile on XCT was recalibrated to Xbox’s number on 30 September 2026: 5,605 counts changed, and 4,557 of them went up.
What is reported
On 23 Sep 2026 a news report gave more details from “one source with knowledge of the new feature”. Here is what the report adds to our findings, and how it compares with the app code.
ReportedA Mythic is worth 0 Gamerscore. Our readingThis agrees with the app: we found no Gamerscore or reward field for Mythic.
ReportedAchievements from title updates do not count, in addition to DLC packs. Only the base list counts. In app codeThe app only knows “original game” (BaseGame) and “Add-on”. The server decides which achievements are in the BaseGame group, so the app code cannot confirm the title-update rule.
ReportedMythics are retroactive. They apply to all games with achievements. When the feature starts, your profile gets a Mythic for each game where you already completed the base list. Our readingThis agrees with the app: the server sends the completion for each player, and the app does not limit it to new games. The server did not send group data on 23 Sep, so we cannot check it yet.
ReportedYour profile shows a total count of your Mythics, and everyone can see it.
ReportedThe header of the Gaming tab on an Xbox profile gets new stats: total Gamerscore with a countdown to your next Gamerscore milestone, the total number of achievements you unlocked, and your number of Mythics. It seems to replace the current header, which compares your Gamerscore this month with your friends.
ReportedIn the Gaming tab, the art of a game with a Mythic gets a green star, a laurel and a green border. This is in addition to the 100% completion highlight that Xbox added to profiles earlier in 2026.
ReportedEach game’s achievement progress page has a Mythic tracker that shows how many achievements are left. Select it to hide the achievements that are not needed. All achievement views get a separate Mythic filter. In app codeSame as our finding: the BaseGame progress bar and the “Required for Mythic achievement” filter.
ReportedA new badge on the progress page shows if an achievement is from a DLC pack. In app codeSame as our finding: the “Add-on” label.
ReportedA new system animation plays when you unlock the last achievement of the base list, with a new notification, sound and icon. In app codeSame as our finding: the AchievementGroupCompletion toast, the flipbook animation and MythicAchievementUnlocked.mp3.
ReportedThe source says Mythic starts “soon”. The report thinks it can be before the end of September 2026. It is not known if all players get it at the same time or Xbox Insiders first. In app codeOn 23 Sep the feature flag was still off and the server sent no group data (see “Is it switched on yet?”).
How the Xbox app decides Mythic
1 · GroupsXbox Live tags each achievement with the IDs of its groups (groupIds).
2 · BaseGameOne group per game has the type BaseGame. If there are more, the app uses the first one.
3 · ProgressThe app compares unlockedAchievementIds with achievementIds and shows “X of Y original achievements”.
4 · CompleteThe server sets isComplete and a completedTime. That is your Mythic.
5 · ToastA push notification of type AchievementGroupCompletion starts the Mythic animation and sound.
This is the shape the app expects (field names from the app, values made up). groups is an object keyed by group ID:
The app reads this from achievements.xboxlive.com/users/xuid(…)/achievements?titleid=…&possibleOnly=true with x-xbl-contract-version: 6. When the flag is off, it asks for version 4, which has no groups. It does not read group data when a request asks for more than one game: “Skipping achievement group parsing for a multi-title request to avoid cross-title classification”.
The questions everyone is asking
Does DLC affect it?In app codeNo. Only the BaseGame group counts, and DLC achievements are labelled “Add-on”.
Is it 100% Gamerscore?In app codeNo. The app counts achievements in the group, not Gamerscore.
Do games I already completed get a Mythic?Our readingProbably yes, if Microsoft gives the game a BaseGame group. The server sends isComplete and a completedTime for each player. The app does not calculate the Mythic itself. Microsoft has not confirmed this. ReportedYes. Mythics are retroactive.
Will Xbox 360 and Xbox One games get one?UnknownThe app gets group data for each game from the server. Nothing in the app limits it to new games, but the server decides. ReportedMythics apply to all games with achievements.
Is there a separate Mythic achievement in each game’s list?Our readingNo. Mythic is a status of the whole game (a group that is complete), not a new achievement with its own Gamerscore. ReportedA Mythic is worth 0 Gamerscore.
Where Mythic lives in the app, and signs it is new
In app codeMythic is in the native achievements panel of the Xbox app (XboxGameBarWidgets.exe, shipped inside the Xbox app). It is not in the app’s React Native bundle. The separate Game Bar overlay app (version 7.326) has no Mythic code yet.
In app codeThe panel gets a Mythic header: the badge (a locked or an unlocked image), a progress bar with a percentage, and a button that shows only the achievements required for Mythic.
In app codeThe Mythic text exists only in English (US and GB). The app has 9 languages, and the other 7 do not have the Mythic text yet. This is a strong sign that the feature was added very recently.
In app codeThere is no separate setting for Mythic toasts. The only settings are the general notification switches (Achievements, Messages, Party, and so on). Our readingThe Achievements switch also controls the Mythic toast.
CheckedThe web apps do not have Mythic yet: xbox.com/play build 1.0.2609.0802 and play.xbox.com build 1.0.2609.1717 contain no Mythic or achievement-group code.
Our readingThe app gives each Mythic toast a key made from the player, the game and the group. So you get one toast per game, even if Xbox Live sends the notification again.
Is it switched on yet?
App codeReady. The panel, the toast, the sound and the data parser all ship in Xbox app 2610.1000.53.0.
Feature flagOff. The app gets its flags from beige.xboxservices.com and keeps a copy on disk. That copy has 198 flags, and EnableAchievementGroups is not one of them. With no value the app treats the flag as off and hides Mythic.
Server dataNot sent yet. On 23 Sep, groupIds was empty and there was no completion block, on the game list and on single-achievement reads. This includes new 2026 unlocks in TEKKEN 8, Sonic X Shadow Generations and The Dark Pictures: House of Ashes.
So Microsoft must switch on two things: the flag in the app and the group data on the server. Our readingBecause the code is already in the app, Mythic can probably appear without another app update.
Not “100% Gamerscore”
Early reports call Mythic a “100% Gamerscore” reward. The app shows something different. It counts achievements in the BaseGame group (“X of Y original achievements”). It does not count Gamerscore.
This matters because the completion percentage Xbox shows today is based on Gamerscore. Games that got more achievements later can show 100% while achievements are still locked. Mythic uses its own list.
What is still unknown
UnknownWhich achievements Microsoft puts in each game’s BaseGame group. On 23 Sep, groupIds was still empty and there was no completion block. We checked games with a lot of DLC, for example Dead by Daylight, Killer Instinct, HITMAN 2 and Overwatch 2.
UnknownIf older Xbox 360 and Xbox One games get a BaseGame group, or only new games. ReportedAll games with achievements, but the server data does not show it yet.
UnknownIf unobtainable or delisted achievements can stop a Mythic, or if Microsoft takes them out of the group.
UnknownIf Mythic gives Rewards points. We found no reward field for it in the app. Reported0 Gamerscore, a Mythic count on your profile and a green star, laurel and border on the game art.
The sounds
These sound files come from the app. Compare the Mythic sound with the normal and rare achievement sounds.
The art
The toast animation is a set of flipbook sheets with 160 px frames. The app colours the white frames and adds a highlight layer on top. Select a tile to see it larger. Use the arrow keys to go to the next tile.
XCT rebuilt the three Game Bar achievement toasts from the files in Game Bar 7.326.9230.0. The layout, every movement, every time and every easing curve come from the app’s own animation files. The laurel comes from the leaf table in GameBar.exe. Select a toast to play it with its sound.
The toast takes the Windows accent colour, so select a colour above. The app’s code starts some parts itself, and that code is not in the animation files: the pulse star, the laurel, the rare gleam, the time the toast stays open and the size of the Aurora glow. For these parts XCT uses its best times, and fits the glow to the outline of the pill. The sample text is not real data. When you pick a game, the count is every achievement XCT has for it, and the real Mythic counts only the base game.
PROMake your own toastWrite your own text for each toast: lines 1 and 2 show first, then the toast flips to line 3. Save it as a CSS block, GIF, WebP or MP4.
MP4 (1920×1080, 30 fps, with the toast sound) and GIF (960×540, 15 fps) are 16:9, ready for X and other social sites. WebP (25 fps) is cut close to the toast for stream overlays, with a transparent background if you want one. The CSS block is HTML and CSS with no script. It loads the images from xct.live and has no sound. Your browser makes every file; XCT does not keep your text.
Every other Xbox toast
Game Bar 7.326.9230.0 (26 Sep 2026) has five toast styles: Default, Enhanced, EnhancedGleam, EnhancedAurora and Circle. The new EnhancedAurora toast has two laurel halves, the two Mythic glows above, a pulse star, a ripple and sparkles. On an older Game Bar, the Xbox app shows the EnhancedGleam toast in its place.
These are all the toast animation files that are not Mythic files. The normal achievement uses the trophy sheets. The rare achievement uses the diamond sheets. The app colours the white frames. The tiles show each sheet as an animation. Select a tile to see it larger, then use Open original to get the sheet.
Aug 2026Xbox boss Asha Sharma hints at an equivalent of the PlayStation Platinum Trophy (as reported by Pure Xbox).
19 Sep 2026Stallion83 finds a “Completed / Incomplete Mythic Achievement” filter in the Alpha Skip-Ahead console build (Pure Xbox). XCT finds no Mythic data in the PC app, on the web or in the achievements API.
19 Sep 2026XCT finds a new, empty groupIds field on achievements (contract version 6). This is the first sign of achievement groups on the server.
23 Sep 2026Xbox PC app 2610.1000.53.0 adds the Mythic badge, animation and sound, the BaseGame progress bar and the AchievementGroupCompletion notification. @klobrille posts the name, symbol and sound on X. XCT decodes the rules from the app and publishes this page.
23 Sep 2026A news report gives more details from a source: 0 Gamerscore, retroactive for all games, a Mythic count on the profile, a new Gaming tab header and a green star, laurel and border on game art.
26 Sep 2026Xbox PC app 2610.1001.4.0 and Game Bar 7.326.9230.0 add a new in-game toast style, EnhancedAurora, with laurels, two Mythic glows and a pulse star. The Mythic rule does not change. XCT rebuilds all three toasts from the app files: watch them. See every toast.
NowThe server still sends no group data. XCT checks the API and will update this page when the BaseGame groups fill.
Sources and credit
XCT.live: the app code, the flipbook art, the sounds and the API checks on this page.
@klobrille on X: first to post the Mythic name, icon and sound from the Xbox PC app.
Stallion83, via Pure Xbox: the Mythic filter in the console build.
