Black Ops 3 Zombies Archipelago Setup Guide

What you need

• Call of Duty: Black Ops III for Windows through Steam
• The DLC for every official Zombies map enabled in your YAML
• One BO3 mod download from this page
• A generated Archipelago room and its server address, slot name, and optional password

t7patch is strongly recommended by the mod author for safer and more reliable online play. If the mod reports that Archi-T7Overcharged.dll could not initialize, install the current Microsoft Visual C++ Redistributable.

1. Choose the correct mod build

Use Current Steam Patch for a normal, current Steam installation.

Use Downgraded EXE only if you intentionally replaced the BO3 executable with depot 311210/311211/9084453472036406216. The two downloads contain the same mod data but different builds of the networking DLL, so selecting the one that matches your executable matters.

You do not need cod_bo3.apworld when generating and hosting through ArchipelagoMine. That file is only needed by people running a separate Archipelago generator or server.

2. Install the BO3 mod

1. In Steam, right-click Call of Duty: Black Ops III, then choose Manage → Browse local files.

2. Create a folder named mods in the game directory if it does not already exist.

3. Extract the selected ZIP into mods.

4. Verify this file exists:

   Call of Duty Black Ops III\mods\bo3_archipelago\zone\Archi-T7Overcharged.dll

If the path contains bo3_archipelago\bo3_archipelago, move the inner folder up one level.

Every PC joining the modded Zombies lobby should install the same v0.5.7 build.

3. Create your player settings

1. Open the Settings page for Black Ops 3 - Zombies.
2. Select only maps that you own and have installed.
3. Download the player YAML and use it when creating the ArchipelagoMine game session.
4. Keep the YAML name handy; it is your exact slot name and is case-sensitive.

4. Connect and play

1. Launch BO3 and load bo3_archipelago from the Mods menu.
2. Open the mod's Archipelago menu.
3. Enter the room's server address as host:port, your exact slot name, and the room password if one was configured.
4. Validate the connection, then start the Zombies game.

The upstream client can sometimes display end of file when validation takes too long. If the address and slot are correct, try starting the game once before troubleshooting further.

Updating or removing the mod

End BO3 before replacing files. To update, replace the entire mods\bo3_archipelago folder with the folder from the new ZIP. To uninstall, remove that folder; the base game files are not patched.

Report mod or connection problems on the upstream issue tracker.