12TB Steam leak exposes decade of game builds, including Half-Life 2: Episode 3 assets

A massive leak of over 12 terabytes of data has surfaced online, containing builds of nearly every game uploaded to Steam between 2003 and 2013. The archive includes assets from the canceled Half-Life 2: Episode 3, cut content from Portal 2, and an unreleased Portal-universe title called F-Stop built around a camera mechanic. Third-party titles are also present, with early builds of Call of Duty, Resident Evil, Mirror's Edge, Batman: Arkham Asylum, and Dragon Age: Origins already identified. Due to the sheer size of the archive, researchers are still working through its full contents and more discoveries are expected.
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