Sadly it was said that valve lost the source code to Prospero, the other game they were working on alongside Half-Life
Comment on The story of a crazy Half-Life 2 bug, as told by former Valve dev Tom Forsyth (Mastodon thread)
BootyEnthusiast@lemmy.dbzer0.com 2 days ago
Very cool.
Also Valve is legitimately one of the only devs who kept original source code from 2004.
Even Blizzard lost the original World of Warcraft code.
raman_klogius@ani.social 2 days ago
uninvitedguest@piefed.ca 2 days ago
https://opensource.microsoft.com/blog/2025/11/20/preserving-code-that-shaped-generations-zork-i-ii-and-iii-go-open-source