Source SDK 2013

Source code for Source SDK 2013.

Contains the game code for Half-Life 2, HL2: DM and TF2.

Now including Team Fortress 2! ✨

Build instructions

Clone the repository using the following command:

git clone https://github.com/ValveSoftware/source-sdk-2013

Windows

Requirements:

• Source SDK 2013 Multiplayer installed via Steam
• Visual Studio 2022 (Community, Professional, or Enterprise edition)

From the root of the cloned directory, run:

build.cmd

After the build completes:

1. Copy all contents from the game folder to C:\Program Files (x86)\Steam\steamapps\common\Source SDK Base 2013 Multiplayer
2. Launch the mod using the mod_tf.cmd file in that directory

Linux

Requirements:

• Source SDK 2013 Multiplayer installed via Steam
• podman

Inside the cloned directory, navigate to src, run:

./buildallprojects

This will build all the projects related to the SDK and your mods automatically against the Steam Runtime.

You can then, in the root of the cloned directory, you can navigate to game and run your mod by launching the build launcher for your mod project, eg:

./mod_tf

Mods that are distributed on Steam MUST be built against the Steam Runtime, which the above steps will automatically do for you.

Distributing your Mod

There is guidance on distributing your mod both on and off Steam available at the following link:

https://partner.steamgames.com/doc/sdk/uploading/distributing_source_engine

Additional Resources

• Valve Developer Wiki

License

The SDK is licensed to users on a non-commercial basis under the SOURCE 1 SDK LICENSE, which is contained in the LICENSE file in the root of the repository.

For more information, see Distributing your Mod.