Half-Life 2 Substance features an adaptive class system and open-ended gameplay.
The full version of Half-Life 2 Substance. Extract it in Sourcemods and run the installer with admin rights. Requires HL2 and Source SDK 2006.
A version of Half-Life 2 Substance with no installer. Extract it in Sourcemods and move the "hl2.exe" file to SteamApps\Common\SourceSDKBase.
A collection of mutators for Half-Life 2 Substance. Includes fixes for common issues with the SDK and missing DLL files.
Half-Life2:SUBSTANCE recoreographs the hl2 single player experience, John Woo style: new action oriented gamestyle,deadly challenges and extra gorish...
Half-Life 2: Substance re-coreographs the original single player campaign, John Woo style: intensive new action and higher challenges makes it the best...