Hidden: Rebuild
Hidden: Rebuild brings Hidden: Source back to life on the current Source SDK 2013 Multiplayer. One player is the Hidden, fast, strong and all but invisible, with only a knife and pipe bombs. Everyone else is IRIS, a special forces team with guns, sonic alarms and a thermal radar, who have to find and kill it before it picks them off one by one.
The original game's code was lost. This is a rebuild of Hidden: Source Beta 4b (2006) that plays it the way it was, with the original maps, models and sounds from your own Beta 4b install, on a maintained engine with 64-bit Windows and Linux builds and native Linux dedicated servers.
Play
The launcher sets everything up: it installs Hidden: Rebuild and keeps it updated, and either uses your existing Beta 4b install or downloads it, has Steam install Source SDK Base 2013 Multiplayer, and starts the game. Steam is required. More on installing, including manual install options.
- Install Hidden: Rebuild, with the launcher or manually
- Run a server and the plugins it has built in
- Source code on GitHub
Downloads
The game's packages, for manual install and for servers. The launcher downloads these itself.
Current release: v1.0.3.0, published 2026-09-30
Linux: hidden2013-1.0.3.0-linux-server.tar.gz
Linux: hidden2013-1.0.3.0-linux-standalone.tar.gz
Linux: hidden2013-1.0.3.0-linux.tar.gz
Windows: hidden2013-1.0.3.0-windows-server.zip
Windows: hidden2013-1.0.3.0-windows-standalone.zip
Windows: hidden2013-1.0.3.0-windows.zip
See the releases on GitHub; latest is the newest test build.