Over 12TB of leaked Steam files spanning a decade surface online
A massive data leak containing Valve and third-party game files from 2003 to 2013 has appeared online, totaling more than 12 terabytes.
A sprawling collection of Steam-related data has leaked online, apparently covering nearly everything published on the platform between 2003 and 2013. The leak totals more than 12 terabytes and includes both beta builds and finished games from Valve as well as third-party developers.
A catalog compiled on GitHub already lists most of the titles found in the leak. Among them are Valve's own franchises, including Half-Life, Left 4 Dead and Portal, alongside major series such as Call of Duty, Fallout and Civilization, as well as numerous indie titles.
Unreleased games and early builds
Given the sheer size of the leak, the community is still sorting through its contents. So far, researchers have found details of F-Stop, an unreleased Valve game built around a camera mechanic that lets players manipulate real-world objects. The leak has also produced references that some believe are tied to the long-rumored Half-Life 2: Episode 3, which was once intended as the series' finale before being cancelled.
Speculation is spreading quickly across social media, but Valve has not yet commented, so claims about the leak's contents should be treated cautiously for now.
How the leak happened
According to one social media user tracking the story, the leak was made possible by a publicly accessible server endpoint. This also explains why the files only go up to 2013 — the year Valve reportedly switched to a different storage system.
The outlet reporting on the leak has contacted Valve for comment and is awaiting a response.
