Where Does Half-Life: Alyx Store Addons?
Alyx addons live in an addons folder under the game's content tree, fed by Steam Workshop subscriptions and manual installs alike.
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Alyx treats community content as addons in a dedicated folder inside its content tree. Workshop subscriptions download there automatically, and manual installs drop in as folders with an addoninfo file. The in game addons menu lists whatever the folder holds.
Custom campaigns, weapon tweaks, and comfort mods all share the layout. Workshop cache corruption shows up as addons that list but never load, fixed by unsubscribing, clearing the folder, and resubscribing. Back up the folder before VR modding sprees, since re downloading gigabytes over hotel wifi ruins evenings.
Where Half-Life: Alyx stores this, by platform
[Steam]\steamapps\common\Half-Life Alyx\content\hlvr\addons
One folder per addon with its info file at root. Workshop subscriptions land here automatically. Toggle entries in the in game addons menu without touching files.
Frequently asked questions
My Workshop addon never appears in game. Why?
Confirm the addon folder contains an addoninfo file at its root and sits directly under addons, not nested deeper. Workshop items that fail to download leave empty folders the game skips without error.
Can I enable and disable addons in game?
Yes through the in game addons menu, which toggles entries without file surgery. Keep one complex campaign active at a time, since script addons can fight over the same systems.
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