Source SDK Documentation

Todo: Section dividers, using the delineation from User:THE_OWL/Sandbox/Pages/Software_docs.

**The Source SDK is freely available to all Steam users.** It is used to develop mods and content for the Source 2006, 2007, 2013 and Team Fortress 2 engine branches.

**Download and Installation · Distributing Source mods · Frequently Asked Questions · Release Notes**
Modding	Creating, organizing and releasing your Source project.
Level Design	Maps are the 3D worlds where everything comes together.
Modeling	Models are the detailed 3D objects that appear in the game world.
Materials	Textures and shaders are combined in Source to create materials.
Sounds	Quality audio adds a fourth dimension to your world.
Particles	Effects like smoke, sparks, blood and fire are created with particles.
Programming	A mod's C++ code defines the way its world and game rules behave.
Scripting	Scripting can be used for adding new functionality or logic to entities.
I/O System	The I/O system is the backbone of most levels in Source-based games/mods.
Artificial Intelligence	AI controls the behavior of all but the simplest of NPC actions.
Choreography	Direct your digital actors' performances with choreographed scenes.
Tutorials	Step-by-step guides on a variety of topics.
Technical	In-depth discussion on the Source Engine's features.
Glossary	Explanations for terms you may encounter.
Official Tools	Official tools made by Valve for their games.
Third-Party Tools	Useful developer tools created by the community.

List of software-specific documentation indices

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List of featured documentation indices
Engines	GoldSrc Source Source 2
Workshop tools	Dota 2 SteamVR Half-Life: Alyx Counter-Strike 2
Software-specific	Source Filmmaker Team Fortress 2 Left 4 Dead 2 Portal 2 Half-Life 2
Didn't find the software you wanted? See the full list →

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