Black Mesa: Uplink is the recreation of the Half-Life demo (HL: Uplink) released by Valve in early 1999 which featured content that was scrapped from the original storyline.
The MOD version of Black Mesa: Uplink (version 1.0) - ZIP archived version. [WILL NOT WORK ON STEAM VERSION OF BLACK MESA!]
The release version of Black Mesa: Uplink (version 1.0) - Installer EXE version. [THIS VERSION WILL NOT WORK WITH THE STEAM VERSION OF BLACK MESA)