Steam Achievement Leak Exposes Persona 6, Fable, and Unannounced Titles via Exophase

Steam achievement data for a slate of unreleased and unannounced PC games has surfaced on third-party tracking site Exophase, apparently the result of a Valve API error that exposed private achievement lists to public scanning. The leak encompasses high-profile titles such as Atlus RPG Persona 6, the Playground Games reboot of Fable, RGG Studio's Stranger Than Heaven, and several other projects that have not been formally announced for PC. Exophase owner Mike Bendel, who operates under the handle x3sphere, addressed the incident on ResetEra and confirmed the site's scanner picked up the data because the achievements were unexpectedly accessible through Valve's API. For players who follow upcoming releases closely, this leak offers an unfiltered look at progression systems and narrative beats long before any marketing campaign intends to reveal them.

The scope of the leak is unusually broad, covering games at vastly different stages of development and announcement. Gematsu compiled a list of affected titles that includes imminent releases like Control Resonant, Silent Hill: Townfall, and Ace Combat 8: Wings of Theve alongside projects still shrouded in secrecy such as Kingdom Hearts 4 and Mega Man: Dual Override. Thief: The Dark Project Remastered and Ken Levine's Judas also appear in the data. Bendel noted that he rarely sees games without public names pop up with achievements, yet over a short window a batch of them appeared simultaneously — when a name is unknown, Exophase defaults to the AppID. This pattern strongly suggests a systemic API issue on Valve's side rather than individual publisher mistakes.

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The achievement lists themselves contain specific details that go well beyond simple progression markers. Bendel explicitly warned that perusing the lists carries a strong risk of major spoilers, flagging Persona 6, Kingdom Hearts 4, and Mega Man: Dual Override as particularly vulnerable. Even less narrative-driven titles like the driving game Clutch reportedly contain spoiler-sensitive achievements. The leak effectively strips away the controlled reveal cadence publishers rely on, exposing story beats, character arcs, and ending conditions through achievement names and descriptions alone. For a narrative-heavy RPG like Persona 6, this could mean key plot twists, confidant outcomes, or ending requirements are now searchable by anyone who knows where to look.

Beyond the spoiler risk, the lists reveal curious design choices and tonal flourishes. Fable appears to include an achievement dubbed "Cost of Living Crisis," a title that hints at the series' signature satirical edge applied to modern economic anxiety. Judas currently shows only a sample trophy for achieving 10 kills, suggesting the achievement framework is in an early placeholder state. Stranger Than Heaven, the RGG Studio brawler that has drawn attention for its surreal casting choices, includes an achievement for smoking 20 or more hand-rolled cigarettes but notably lacks one for romancing the resurrected corpse of Tupac — a detail that underscores the game's absurdist humor while confirming specific gameplay mechanics tied to consumable use.

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If the leaked data is accurate, it confirms several unannounced PC ports and provides a rough proxy for development progress. The presence of fully fleshed achievement lists for games like Persona 6 and Fable suggests those versions are far enough along for publishers to configure platform-level progression systems, which typically happens in later development phases. Conversely, the sparse placeholder data for Judas aligns with its earlier development window. The leak also inadvertently validates the existence of projects like Stranger Than Heaven on PC, which RGG Studio had not explicitly confirmed for the platform. For Valve, the incident raises questions about API access controls and whether private depots are adequately protected from third-party scrapers during pre-launch testing periods.

Bendel's explanation points to a temporary API misconfiguration rather than a deliberate data breach, but the practical outcome is the same: achievement data that developers intended to keep private until launch is now in the wild. Valve has not yet commented publicly on the incident. The timing is notable — with Summer Game Fest and other showcase seasons approaching, several affected publishers may now face pressure to address leaked content or accelerate announcement plans. For players, the leak creates an awkward dilemma: the data is publicly accessible, but engaging with it risks spoiling experiences that are months or years from release.

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Exophase has operated as a reputable trophy and achievement tracking service for years, and Bendel's transparency about the scanning mechanism lends credibility to the API error theory. The site does not actively hunt for hidden data; it ingests what the API returns. Prior leaks of this nature have occasionally stemmed from SteamDB entries or depot manifest updates, but a mass exposure via the official achievement API is less common. RGG Studio's Stranger Than Heaven has already generated discussion for its provocative casting — studio head comments about exploring Tupac's "potential future" if he were alive today suggest the game leans heavily into speculative fiction. The achievement leak adds a layer of mechanical detail to that narrative framework. Atlus, meanwhile, has not acknowledged Persona 6's existence formally, making this one of the most significant data points yet for the platform's eventual release.

Players who want to avoid spoilers should treat Exophase and similar tracking sites with caution until affected publishers clarify the situation or Valve resolves the API exposure. The achievement lists remain viewable at the time of writing, though they may be removed or privatized once Valve patches the access issue. For now, the leak stands as an unusual window into the pre-release infrastructure of major upcoming titles — revealing not just that these games exist, but how they structure player progression, what they consider milestone moments, and in some cases, where their stories intend to go.