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Getting your DLC content into the macOS install

This unlocker changes DLC ownership — it does not download or distribute DLC content. You bring the content files yourself, from a copy you legitimately own. This guide covers the two things people actually get stuck on:

  1. Copying the dlc/ folder from a legal install
  2. Joining a multi-part (split) archive on macOS

⚠️ You must own a legitimate copy of Europa Universalis IV on Steam. This is about moving content you already have onto your Mac — not obtaining it. If you don't own the DLC, please buy it and support Paradox Interactive.

1. Copy the dlc/ folder from a legal install

Paradox DLC content is cross-platform — the exact same files work on Windows, Linux and macOS. If you own EU4 and its DLC on another machine, copy the content across.

Where the dlc/ folder lives

Platform Typical path
Windows …\Steam\steamapps\common\Europa Universalis IV\dlc\
Linux ~/.steam/steam/steamapps/common/Europa Universalis IV/dlc/
macOS ~/Library/Application Support/Steam/steamapps/common/Europa Universalis IV/dlc/

On macOS the Steam library is often on an external drive instead, e.g. /Volumes/<drive>/SteamLibrary/steamapps/common/Europa Universalis IV/dlc/.

Steps

  1. On the source machine, open the game's dlc/ folder. Each DLC is a subfolder named dlcNNN_<name>/ containing three files:
    • dlcNNN.dlc — metadata (the unlocker reads the Steam appid from here),
    • dlcNNN.zip — the actual content,
    • thumbnail.png.
  2. Copy the subfolders (or the whole dlc/ folder) onto your Mac, into: 
    …/Europa Universalis IV/dlc/
  3. Re-run the installer so the unlock list is rebuilt from the new content: 
    ./bin/unlocker install eu4
  4. Verify: 
    ./bin/unlocker status eu4     # → unlockall = false; explicit [dlc] list (N DLC)
    Then open the Paradox launcher's DLC tab — everything whose content is present should be owned.

Common mistakes

  • Wrong target folder. Content goes in …/Europa Universalis IV/dlc/ — not inside the eu4.app bundle, and not in a nested …/dlc/dlc/. Each DLC should end up at …/Europa Universalis IV/dlc/dlcNNN_<name>/.
  • Flattening the structure. Keep each dlcNNN_<name>/ folder intact; don't dump the loose .zip/.dlc files directly into dlc/.
  • Leaving the .dlc file behind. The unlocker reads each .dlc file's steam_id; without it, that DLC won't be added to the list.
  • Quarantine on copied/downloaded files. If the launcher acts up after a manual copy: 
    xattr -dr com.apple.quarantine "…/Europa Universalis IV/dlc"
  • Overwriting newer content with an older pack. If you already had some DLC, keep the newer copies. Re-running install only rebuilds the list — it never deletes your content.

2. Join a multi-part (split) archive on macOS

Content is sometimes distributed as one archive split into parts: Something.zip.001, Something.zip.002, … These are one archive cut into chunks — not separate zips. Extracting each part on its own is the usual source of "duplicate files" / error confusion. Join them and extract once.

Two macOS-specific gotchas:

  • The built-in unzip and Archive Utility usually can't handle the LZMA compression these packs use, and they don't understand split sets at all.
  • So use 7-Zip (7zz): it handles LZMA and reads every part automatically when you point it at the first one (.001).

Install 7-Zip

brew install sevenzip      # installs the `7zz` command

Check the parts before extracting

ls -la *.zip.0??           # all parts present and in order: .001 .002 .003 …?
7zz l "Something.zip.001"  # list contents — should show  Type = Split, Volumes = N

7zz l reads the whole set starting from .001. If it lists the file tree without error, the set is complete and in the right order.

Extract

# Point -o at the GAME folder (the PARENT of dlc/). The archive already contains
# a top-level dlc/, so it merges into place:
7zz x "Something.zip.001" -o"/path/to/Europa Universalis IV"

Alternative — physically concatenate the parts first (order matters):

cat Something.zip.00{1,2,3,4} > Something.zip
7zz x Something.zip -o"/path/to/Europa Universalis IV"

Verify integrity

7zz t "Something.zip.001"   # test every part; "Everything is Ok" means good

Troubleshooting 7zz

Symptom Cause / fix
Cannot find archive / No more files A part is missing or misnamed. They must form a continuous .001 .002 .003 … with no gaps, all in the same folder.
Data Error / Unexpected end of archive A part is corrupt or only partly downloaded. Re-download that part and re-check sizes (all parts except the last are usually identical in size).
Unsupported Method (with unzip/Archive Utility) That's the LZMA limitation — use 7zz, not unzip or Archive Utility.
Files landed in …/dlc/dlc/… You pointed -o at the dlc/ folder. Point it at the game folder (the parent) instead.
command not found: 7zz Run brew install sevenzip (the formula is sevenzip; the command it provides is 7zz).

After extracting, run ./bin/unlocker install eu4 so the DLC list picks up the new content, then ./bin/unlocker status eu4 to confirm.

This unlocker does not host, link to, or download DLC content. If you don't already own the DLC, please buy it and support Paradox Interactive.