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The Half-Life: Alyx Workshop Tools is a set of software utilities available as a free download for Half-Life: Alyx that allow you to create items for inclusion in the the Steam Workshop and your own custom game addons.

HL Alyx workshop about.png

Download and Installation

Introduction to using the Half-Life: Alyx Workshop Tools
Creating Addons
Creating addons for Half-Life: Alyx addon
Description of the lighting components in Half-Life: Alyx levels
Map Extensions
How to create Map Extensions to add to an existing level
Using the Animgraph node-based animation system