A massive cache of internal builds from Valve has reportedly leaked online, including beta builds of several classic Valve titles and possible weapons from Half-Life 2's cancelled third episode.
The leak, which began circulating on Saturday and comes from an unknown source, includes 12 terabytes of data currently being sifted through by data miners. The files are dated from a ten-year period between 2003 and 2013, and include builds and assets of many Valve projects across that timespan.
Thus far, data from Counter-Strike: Global Offensive, Left 4 Dead, and Portal 2 have all been claimed to feature in the leak. This reportedly includes the complete Portal 2 beta from 2009, a much sought-after artifact for Portal 2 fans.


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