A significant data leak has surfaced, containing over 12TB of content related to various titles available on Steam from 2003 to 2013. This leak, referred to as a 'teraleak,' includes a comprehensive collection of files from Valve's former 'Steam2' server architecture, which has been made available through a BitTorrent tracker. The collection encompasses thousands of 'depots' that represent nearly every version of games uploaded to the Steam2 servers, including public release builds and previously unseen pre-release, prototype, and playtest versions of popular titles.
The leak is believed to have occurred due to Valve's transition from the Steam2 system to the current SteamPipe system in 2013, which changed the content distribution method. This transition resulted in many early versions of games being considered lost, as they were no longer accessible from Valve. However, data miner Gabe Follower confirmed that the content was obtained via a publicly accessible API endpoint, indicating that it was available for download without any restrictions.
The teraleak includes early versions of games such as Portal 2, which features intriguing cut content, including new dialogue and gameplay mechanics. Other titles affected by the leak include Left 4 Dead 2, CS: GO, and various third-party games like Spore and Dragon Age: Origins. While the leak does not contain any games released in the last 13 years, it raises concerns about the security of Valve's servers and the legal implications of distributing previously private game builds.
Experts warn that the archive contains a significant amount of third-party content, which complicates the situation further. The leak has drawn comparisons to a previous incident involving Nintendo's internal development files, highlighting the potential for uncovering hidden aspects of gaming history.