: Use a tool like 7-Zip or Windows' built-in extractor to extract the contents of the Call of Duty Deluxe Edition.zip file into your chosen folder. 2. Install the Expansion (United Offensive)

To install the from a .zip archive, follow these steps to ensure the game client and its expansion, United Offensive , are set up correctly: 1. Extract the Base Game

: Run the game using the CoDMP.exe (multiplayer) or CoD.exe (single player) file found in the root of the extracted folder.

: Ensure the expansion files are merged with the base game files to allow the standalone client to recognize them. 3. Launch and Optimization

: Check the version number in the bottom right corner of the main menu. If it does not show 1.5 , you may need to apply the official Call of Duty 1.5 patch for compatibility with modern systems and servers.

If your archive contains separate folders or a nested .zip for the expansion pack:

For those looking for a preserved copy, versions of this edition can sometimes be found on platforms like the Internet Archive .

: Choose a destination folder for the game. The traditional installation path is C:\Program Files (x86)\Activision\Call of Duty\ .