SteamLink is an effort to run Half-Life: Uplink, Half-Life's single-player demo campaign from 1998, in Steam as easily as possible, while leaving it as true to the original demo as possible. No in-game content has been modified, and the "loading" and menu backgrounds are taken directly from the original Uplink, as opposed to the generic Half-Life screens in Steam.
Simply run the installer. The installer will determine your Steam installation directory, and place files in the necessary directory, for example C:\Program Files\Steam\SteamApps\joeuser\half-life\steamlink. After the installer finishes, restart Steam, and "Half-Life: Uplink" should appear as a "Third party mod". In addition, a "SteamLink" Start Menu group will be created for direct access to Half-Life: Uplink.
Of course, the entire point of SteamLink is to play Half-Life: Uplink from within Steam, which means using the current Half-Life GoldSrc engine. The major benefit is better current hardware/Windows support. The downside is, for whatever reason, Valve decided to remove strafe leaning from GoldSrc a long time ago. You win some, you lose some.
SteamLink does not come with any altered models. However, it is compatible with the PHL High-Definition Pack for Steam, which will give you noticably higher quality models, but will not change textures like walls, objects, etc.
Valve Software, of course, for Half-Life, Half-Life: Uplink and Steam.
Jason Stephens' Uplink Lite, for inspiring me to create a proper "mod" for Half-Life: Uplink.
Werner Spahl's Uplink Addon, for fixing the scientist-speaking-with-two-tongues bug.
"Rusty Le Cyborg", for showing how to remove the multiplayer options from the main menu
