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Valve Developer Community

13,094 articles documenting the development process.

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Whether you're building a commercial project or a modification for Half-Life® 2, you'll want to sign up as a Valve developer today. It's free to join and is open to anyone working with the Source engine and its software development kit.

 GoldSrc and the Half-Life SDK 

If you want to create a Mod for Half-Life or looking for more GoldSrc documentation, click above.

 Source and the Source SDK 

If you want to create a Mod for Half-Life 2 or looking for more Source documentation, click above.

 Source 2 Documentation 

If you want to port Source content to Source 2 or looking for more Source 2 documentation, click above. Otherwise, you can check out the following Source 2 games with Workshop Tools:

• Dota 2 Workshop Tools 

• SteamVR Workshop Tools 

• Half-Life: Alyx Workshop Tools 

• Counter-Strike 2 Workshop Tools 

The engine under the hood of Half-Life 2 can make your game a success. Let Source™ do the heavy lifting so that your team can focus on building great games.

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If you're interested in building a product using Source or Source 2, talk to us about options for distribution on Steam.

Read about Valve Technology 

For Mod Teams

• Source Engine Features
• Why choose the Source engine for your mod?
• Read Making a Mod - building a team through the shipping process.
• Already using the SDK? Check the Source SDK FAQ for some helpful answers.
• New to Source coding? Get started with basic programming articles.
• Read (or add) a tutorial on Source development, or any part of the content creation process.

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For help with using the wiki, see Help:Contents. For help with navigating the wiki, see Category:Entry pages or Category:Valve Developer Community. For more information on the community itself, see Community Portal.

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Community Portal 

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About Valve Developer Community · Privacy Policy · Third Party Legal Notices

© 2005–2025 Valve Corporation. All rights reserved. All trademarks are property of their respective owners in the US and other countries. See the Terms of Use for details.
About Valve Developer Community · Privacy Policy · Third Party Legal Notices