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Welcome to the Valve Developer Community. Whether you're building a "Triple-A" commercial project or a MOD for Half-Life® 2, you'll want to sign up as a Valve developer today.

http://developer.valvesoftware.com/w/images/4/4d/Doublearrow.gif sign up to become part of the community -- it's free!

Valve Technology Source and the Source SDK http://developer.valvesoftware.com/w/images/b/bd/DoublearrowRed.gif Enter the Source Engine Documentation WIKI Our knowledgebase of technical information about using the engine and all of the related tools is now posted on a community-driven web site called a WIKI. Sign up as a developer to contribute or to ask a question. For MOD Teams http://developer.valvesoftware.com/w/images/4/4d/Doublearrow.gif Why choose the Source Engine for your MOD? http://developer.valvesoftware.com/w/images/4/4d/Doublearrow.gif Read "Making a MOD" - building a team through the shipping process. http://developer.valvesoftware.com/w/images/4/4d/Doublearrow.gif Already using the SDK? Check the FAQ for some helpful answers. http://developer.valvesoftware.com/w/images/4/4d/Doublearrow.gif New to Source coding? Get started with "My First Entity". http://developer.valvesoftware.com/w/images/4/4d/Doublearrow.gif Read (or add!) a tutorial on Source development, or any part of the content creation process.

Latest News Source SDK Beta Underway Wed November 22nd, 2005 We've begun testing of the next version of the Source SDK. The initial release includes updates to all of the tools. The highlights are support for HDR throughout the tools and support for Day of Defeat: Source. The entire changelist is available here. To run this beta version you will need to add -beta sdk to your command line when you start Steam, and once you do please report any feedback here. We'll be using that page as a tool to iterate on the beta before it's general release, as well as a way to communicate with the community on individual issues. Commentary System Documentation Wed November 9th, 2005 VDC contributor AndrewNeo got the article started on how to author content for the Commentary System that was first demonstrated in Lost Coast. Since then, Valve's Robin Walker has made some useful additions. New Steam client Mon October 17th, 2005 Thanks to all the VDC members who helped test the beta version of the new Steam client before its release last week. We appreciate getting this kind of help from the community, and plan to use a similar process for future releases.