Xbox’s Mythic Achievement system now has more than a mysterious name attached to it. An update to the Xbox PC app exposed a green badge and a 16-second unlock sound for the award, although the feature itself has not launched and Xbox has not formally explained its rollout.
The Mythic badge appears as a green emblem with a pale four-pointed star framed by a laurel wreath. Its associated unlock audio runs for 16 seconds.
A new update for the Xbox PC App reveals: Xbox Mythic Achievement; plus symbol and unlock sound.
The Xbox Mythic Achievement is expected to be a 100% Gamerscore game completion reward. pic.twitter.com/STLisa4ubz
— Klobrille (@klobrille) September 22, 2026
Related clues have also appeared in Xbox’s interface. A filter included both Completed Mythic Achievement and Incomplete Mythic Achievement, suggesting the platform is already preparing to track the reward across its console experience and PC app.
An earlier account clue appeared on the profile of Raymond Cox, better known online as Stallion83. Cox, recognized as the world’s first Gamerscore millionaire, reacted to the discovery on September 19 by writing, “Can’t wait to get my first myth.”
Can't wait to get my first myth 💪 https://t.co/OKFKkZGnOx
— Stallion83 (@Stallion83) September 19, 2026
Xbox CEO Asha Sharma previously said platinum-style Achievements were coming in 2026. In an earlier post, she described the project as something the team was working on for later in the year. Those comments connect the new badge and sound to Xbox’s announced plans, but the company has not confirmed whether Mythic is active on any broader scale or whether the name is final.
How Mythic Achievements may work
Xbox’s Mythic Achievement is meant to trigger after a player reaches 100 percent Gamerscore in a supported game, making it a platform equivalent to PlayStation’s Platinum Trophy. The award would give completionists a separate marker for a full clear without changing the game’s existing Gamerscore total.
Reported details about the reward’s rules indicate that Mythic would cover a game’s base achievement list. Achievements added through title updates or DLC would not count, and each Mythic Achievement would be worth 0 Gamerscore.
Those reported rules also indicate that Mythic Achievements would apply retroactively to games players have already completed. Longtime Xbox users could therefore see new completion markers appear for finished games without replaying them or earning additional Gamerscore, if the feature launches as described. Xbox has not explained how older titles will be processed or whether individual games will need updates.
The reported plan also calls for a notification, sound, animation, and icon when the award unlocks. Game artwork could receive a special decoration in the Gaming tab, while player profiles may show a total Mythic Achievement count. The app discovery provides the clearest look so far at two of those presentation elements, the green badge and its 16-second audio cue.
Xbox has not dated the wider rollout
Updates across the Xbox console experience and PC app suggest that the feature is moving closer to release. Xbox has not announced a public launch date or said whether Mythic Achievements will first enter the Xbox Insider Program or launch directly for everyone.
TrueAchievements speculated that the feature could begin reaching Xbox Insiders before September 30, but that timing remains unconfirmed. Until Xbox provides its own rollout details, the retroactive rules and the treatment of older achievement lists should be read as reported plans rather than a live system.
Gears of War: E-Day could become an early test for the system when it launches on October 6. The game already has 55 achievements worth 1,000 Gamerscore, covering its campaign, Horde Siege, Versus, collectibles, and high-difficulty challenges, as detailed in the Gears of War: E-Day achievement list.
Would a 0-Gamerscore Mythic Achievement make a full completion feel more satisfying, especially if it applies retroactively to older games and keeps DLC outside the calculation? Share your preference in the comments, then follow us on X, Bluesky, YouTube, Instagram, Steam, and Telegram.
