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Source 2004

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Source 2004 Source 2004 is the original build of the Source engine that Half-Life 2, Half-Life: Source and Counter-Strike: Source shipped with. It was succeeded by the Source 2006 engine branch with the release of Half-Life 2: Episode One.

No current Valve titles hosted on Steam use this particular engine branch, as it is outdated.

Vampire: The Masquerade - Bloodlines Vampire: The Masquerade - Bloodlines still runs on a custom version of the engine, similar to the engine used in the Half-Life 2 Beta leak. However, it uses a proprietary texture format, Python for scripting and BSP version 17, and support Bink videos.

SiN Episodes SiN Episodes also likely used the last?[confirm] build of Source 2004, or possibly an early version of the Source 2006 branch previously used by Half-Life 2: Lost Coast Half-Life 2: Lost Coast, combined with Source 2004 code[confirm], which contains few commands related to the HDR Rendering which was non-functional ("mat_hdr_enabled").

The engine versions for this branch are build 2106 up to 2497 (Protocol 5-7).

Features

Main article:  Source - Features section
Support for Original Xbox Original Xbox game console
Steam Friends & Parlor Games menu (removed in later version of Source 2006 in 2009)
Shader Model 2.0 only
Anti-aliasing
Up to 6x MSAA. 8x MSAA unofficially supported through mat_antialias 8, but will reset to 4X on next launch. MSAA 8X can be also forced through GPU drivers control panel.
6x MSAA does not work on modern graphics card. Only 4x works.
DirectX 9.0
Uses Direct3D 9.0, with support for these hardware levels:
DirectX 6.0 (dxlevel 60) level (not officially supported, but works)
DirectX 7.0 (dxlevel 70) level
DirectX 8.0 (dxlevel 80) level
DirectX 8.1 (dxlevel 81) level
DirectX 9.0 (dxlevel 90) level
Inputs
Support DirectInput controller only

Availability

Source code for this branch is no longer officially available. Most Valve games introduced with Source 2004 are now currently using Source 2013 Singleplayer or Source 2013 Multiplayer.

An archive of the 2004 SDK is available on GitHub.

Usage

The following games are still based on, or currently using Source 2004.

Valve

Third-Party

System Requirements

Minimum Specs :

Note.pngNote:Due to Steam dropped support for previous version of Windows, Windows 10 or later is required to run any Source 2004 games that use Steam DRM.