Steam achievements for unreleased and unannounced games leak on aggregators such as Exophase and SteamDB

Achievements lists for numerous upcoming PC games have mysteriously appeared on a third-party site, potentially revealing sensitive information about titles such as Persona 6, Ace Combat 8, and even some unannounced releases. Exophase, a platform dedicated to tracking achievements across major gaming platforms, has been inundated with a substantial number of lists that shouldn't have been accessible at this stage.

Among the most surprising entries is Persona 6, which still lacks a confirmed release window. The achievement data for this title, while undocumented, appears to contain significant spoilers, given that Atlus has yet to unveil any gameplay footage.

Kingdom Hearts 4's achievement list may offer insights into Square Enix's highly anticipated 2027 release, as Reddit users have extracted details about the possible inclusion of Disney's extended universe worlds. This could corroborate rumors about a forthcoming installment featuring beloved characters. The list also includes Steam games that have yet to be announced or cataloged within Steam's database, such as a potential sequel to Balatro and a remastered version of Thief: The Dark Project with a new campaign called The Tarnished Mirror.

Interestingly, the leak also includes achievements for Squadron 42, the single-player component of Star Citizen, which was delayed to Q2 2027. This suggests that the game might be making its way to Steam sooner than planned. The leak seems to echo the infamous 2021 Nvidia leak, raising questions about the authenticity of the data.

Other games with leaked achievements include Attack on Titan 3, Kena: Scars of Kosmora, Star Wars: Galactic Racer, Stranger Than Heaven, Tomb Raider: Legacy of Atlantis, and Control Resonant. The reporter has contacted Valve to inquire about the matter, and this story is still unfolding, with more titles potentially surfacing in the hours to come.