A large leak of achievement data from Steam is making information about multiple in-development PC games available online. Several outlets report that achievement lists for games that are not yet public, including major titles, were uploaded to Exophase, a site that tracks achievements for Steam and other platforms. The incident is linked to achievement lists becoming accessible through a public interface soon after they were uploaded.
Exophase is described as a tracker that pulls achievement data as it becomes available. Its owner, Mike Bendel (also known as x3sphere), suggests the exposure may stem from a mistake on Valve’s end, allowing games with achievements that should be private to be scanned and indexed. Some of the listed content may be incomplete or use placeholder text, but sources say it includes potential story spoilers, such as Disney-themed worlds for Kingdom Hearts 4 and story details for Persona 6.
Different outlets focus on related implications: some stress the spoiler risk for players, while others highlight that the leak also points to unannounced or even canceled titles appearing under app IDs rather than final names. The reporting also notes that this is not the first time Steam has been connected to leaks, referencing a prior breach involving large amounts of data tied to unreleased games and prototypes.
