It appears to contain basically all private and public games/tools/trailers on steam between 2003 and 2013.
thrdbndndn 11 hours ago [-]
10 years of all games' content is only 13TB? They are 'ancient' games, but I still find the number too small.
jamesfinlayson 17 hours ago [-]
Maybe from a decommissioned content server? Some of this stuff was publicly available up until 2013 (people were frantically downloading old builds of stuff in the lead-up to the Steam2 shutdown in 2013).
Might be bigger in terms of bytes, but https://en.wikipedia.org/wiki/Nintendo_data_leak seemed like a bigger deal.
https://arstechnica.com/gaming/2026/08/a-12tb-steam-teraleak...
https://www.polygon.com/steam-leak-valve-portal-2-beta-half-...
https://www.eurogamer.net/valve-steam2-leak-12tb-portal-2-ha...