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Prerequisites

Installation Guide

1

Find the custom map

  1. Visit the Black Ops 3 Steam Workshop
  2. Search for the map you want to download
  3. When you’re on the map page, copy the mod ID from the end of the URL
Copy mod ID from URL
2

Setup SteamCMD

  1. Download SteamCMD
  2. Extract SteamCMD to its own folder
SteamCMD folder
3

Download the map with SteamCMD

  1. Open steamcmd.exe and wait for it to update
SteamCMD updating
  1. Type login anonymous and press enter to log into an anonymous account
SteamCMD login
  1. Type workshop_download_item 311210 MODID and replace MODID with the mod ID you copied
    • If the download times out, add validate at the end: workshop_download_item 311210 2926551695 validate
  2. Wait for the download to complete (there is no progress bar)
  3. Once complete, locate the downloaded map folder
Downloaded map location
4

Create the usermaps folder

  1. Navigate to your BO3 install folder (for torrent version, it’s usually called t7_full_game)
  2. Create a folder called usermaps inside if it doesn’t exist
Usermaps folder
5

Create the map folder

  1. Open the downloaded map folder from SteamCMD
  2. Find the files that start with zm_ or mp_
Map files
  1. Right-click one of these files and copy the name (e.g., zm_quiet_cosmos)
  2. In your BO3 usermaps folder, create a new folder with that exact name
6

Copy map files

  1. Select all files in the downloaded map folder (press Ctrl+A)
  2. Copy them (Ctrl+C)
  3. Paste them (Ctrl+V) into the map folder you created in usermaps
Copy files to usermaps
7

Launch and play

  1. Load up the BOIII Client
  2. Go into solo or custom games
  3. Your custom map should appear in the map selection screen
Custom map in game

Summary

The final folder structure should look like:
BO3 Install Folder/
└── usermaps/
    └── zm_mapname/
        ├── zm_mapname.ff
        ├── zm_mapname.xpak
        └── (other map files)

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