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Half-Life: Source is a port of Valve's original acclaimed game Half-Life to their new Source engine used for Half-Life 2 . It was initially only available in the Silver and Gold Edition Steam packages when buying Half-Life 2, and in the Collector's Edition retail disc package. Later, it could be bought separately through Valve's Steam game delivery system.

It takes advantage of vertex and pixel shaders to create realistic water effects, and can now portray realistic physics effects. It also has new menus, improved lighting and soft shadows, ragdoll character animations, and a 3D skybox replacing the old 16-bit color prerendered bitmap skies.


Half-Life: Source Windows Some physics features have been added. These hanging crates from "Unforeseen Consequences" now sway back and forth as you jump between them.
Half-Life: Source Windows A scene from "Unforeseen Consequences", with the new water effects demonstrated.
Half-Life: Source Windows At the reception desk, Security Officer Barney Calhoun tries to retrieve his files after a system-crash while a Black Mesa Scientist looks on.
Half-Life: Source Windows Enemies now become ragdolls after dying. This dead soldier can be even shoved into the pit with a little push.

Promo Images

Half-Life: Source Screenshot
Half-Life: Source Screenshot
Half-Life: Source Screenshot
Half-Life: Source Screenshot

Alternate Titles

  • "Hλlf-Life: Source" -- Cover / in-game title

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German version

There are a number of changes in the German version:
  • All human enemies were replaced with robots
  • Except for exploding monsters, all blood and gore effects were removed
  • Killed enemies/persons disappear instantly
A detailed list of all changes can be found on (German)
Contributed to by Alsy (18820) and Scaryfun (17977)