A massive cache of Valve data has reportedly leaked online, appearing to include Portal 2's elusive beta build and a potential weapon from Half-Life 2: Episode 3

Valve's internal data, containing 12 terabytes of files spanning from 2003 to 2013, has reportedly been leaked online. Among the leaked data are beta versions of several classic games and potential weapons from Half-Life 2's cancelled third episode. The leak includes builds and assets from multiple Valve projects throughout the decade.

Notably, the complete Portal 2 beta from 2009 is present in the leak, a highly sought-after item for Portal 2 enthusiasts. This beta differs from the final game in several ways, including the use of pre-recorded GLaDOS voice recordings instead of Wheatley, and additional prominent personality cores. Furthermore, the leak reportedly contains the Weaponizer, an unfinished weapon previously linked to Half-Life 2: Episode 3.

This information was previously leaked in 2011 through a directory named "ep3." Additionally, the files include the cancelled puzzle game F-STOP, a precursor to Portal 2 that was in development for about a year before being abandoned. Known as "Aperture Camera," F-STOP featured a mechanic similar to the 2023 game Viewfinder, where players could take photos of the environment to create 3D objects within the game world.

The origin of the leak remains unknown, but it has been traced back to Valve's Steam2 content-server infrastructure, which was replaced by SteamPipe in March 2013. Valve has been contacted for comment on the leak and will be updated if a response is received.