A public error involving Steam appears to have exposed achievement lists for multiple upcoming games, revealing potential spoilers and details for titles including Kingdom Hearts 4 and Persona 6.
How the leak surfaced
The information was spotted on Exophase, a site that aggregates publicly available achievement and trophy data. According to the report, achievement lists that should have remained private became visible, disclosing narrative and progression-related details tied to campaign milestones, bosses and locations.
Kingdom Hearts 4 and Persona 6 details leaked
Because achievements often reference specific in-game events, the exposed lists allegedly revealed which Disney worlds will appear in Kingdom Hearts 4 and included story-related entries for Persona 6. The precise texts are not reproduced here to avoid further spoilers.
Neither Kingdom Hearts 4 nor Persona 6 has an announced release date, and neither is expected imminently in 2026, meaning these revelations could circulate long before official promotional campaigns begin.
Possible reveal of unannounced projects
Beyond known franchises, some achievement entries appear to point to projects not yet announced publicly. Reported examples include a new collection tied to The Walking Dead and an undisclosed new Tetris title. Because the companies involved have not confirmed these projects, the information should be treated as leaked until official statements are made.
Unclear cause and precedent
It remains uncertain what caused the premature publication of the achievement lists. The article notes a precedent: a previous incident where the remake of Prince of Persia: The Sands of Time had its trophy list published years in advance; that remake was later canceled and the trophies never used.
This episode highlights how secondary systems such as achievements and trophies can unintentionally disclose key characters, settings and plot points, turning an apparently minor publication into a significant source of spoilers for games that may still be more than a year from release.
