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Dedicated servers and VAC

2026-09-28

The second release, v1.0.1.0, is about playing together: running a server, and getting onto one.

Servers

Getting onto VAC servers

Started from the Steam library, the game ran in insecure mode, and VAC-secured servers turned it away. Steam passes the option that should prevent that, but the engine drops it the way Steam starts mods. The fix is one line in Hidden: Rebuild's launch options in Steam:

-sacrifice -steam

The first option is lost on the way, so -sacrifice goes and -steam survives. The install guide has the details.

Gameplay and fixes

Servers only accept players on the same version, so update both when you get this one.


Hidden: Rebuild, a community rebuild of Hidden: Source (Calibre Studios, Beta 4b, 2006) on Source SDK 2013. Not affiliated with Calibre Studios or Valve.