Where Does Europa Universalis IV Store Mods?
EU4 mods are descriptor plus folder pairs in the mod directory under Documents. The launcher reads both or loads neither.
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Paradox modding is gloriously transparent: every EU4 mod is a folder of game files plus a small descriptor file registering it, both sitting in the mod directory under Documents. The launcher lists whatever pairs up correctly. Total conversions and tiny tweaks share the identical layout.
The pairing rule causes nearly every install failure. Descriptor outside, folder beside it, names matching, supported version inside current. Steam Workshop subscriptions automate the same layout in the same folder, so manual and subscribed mods mingle. Ironman achievements and mods stay mutually exclusive by design.
Where Europa Universalis IV stores this, by platform
Documents\Paradox Interactive\Europa Universalis IV\mod
Descriptor file plus matching folder per mod. Keep names paired and supported versions current. Workshop subscriptions land in this same folder.
~/.local/share/Paradox Interactive/Europa Universalis IV/mod
Same descriptor pairing as other platforms. Case sensitivity bites on Linux, so keep filenames exactly as shipped.
~/Documents/Paradox Interactive/Europa Universalis IV/mod
Identical layout under the Mac documents equivalent. The launcher manages the same folder regardless of store.
Frequently asked questions
The mod does not appear in the launcher. Why?
Confirm the descriptor filename matches the folder name and sits directly in mod, not inside the folder. Renamed downloads break the pairing silently. The launcher skips orphans without error.
How do I survive major patches?
Pin the game version in the descriptor and keep one copy per major patch. Paradox patches invalidate descriptor versions, so update day means editing or waiting for the author. Achievements disable with any mod active.
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