A 12-terabyte archive from Valve has leaked online, revealing more than a decade of gaming history that was never publicly released. The files include builds of Half-Life 2: Episode 3, a long-awaited sequel that was never completed, along with cut content from Portal 2 and other Valve projects.
Fans have begun examining the leaked materials, uncovering early assets and development files from various Valve games. The archive provides a look at abandoned projects and content that was removed before final releases. The leak represents one of the largest collections of unreleased gaming material to surface publicly.