Running two instances of the game engine on one screen is taxing. If you experience lag:
: Ensure you have the latest version (v2.4.1 or higher). Add the Game : Open Nucleus Co-Op and select Download Game Handler .
Drag and drop the controller icons into the screen slots (e.g., top and bottom for horizontal split). Click . Method 2: The BGAMES Console Command Mod
Before attempting the install, ensure your system and hardware are ready: black ops 1 zombies split screen pc install
Ensure your game language is set to English, as some community handler scripts fail on localized versions. Step 2: Download and Install Nucleus Co-Op
Before starting the installation, ensure you have the following hardware and software ready:
The only missing feature is (can’t play split-screen plus two remote friends). But for pure couch co-op? This is the definitive way to play Black Ops 1 Zombies in 2025. Running two instances of the game engine on
If the split screens look stretched, check the game's native video settings in each window. Change the aspect ratio manually (e.g., to 16:9 or 4:3) until the UI looks normal.
Nucleus Co-op is a free, open-source program that opens multiple instances of a game, symlinks their files, and handles controller routing to allow local multiplayer.
Total time: 8 minutes.
: Some antivirus programs flag Nucleus Co-Op's "injected" hotkeys (like F2) as false positives. You may need to add an exception for the Nucleus folder. Performance
Official split-screen support for Call of Duty: Black Ops 1 is not available on PC.
Audio is often a point of failure. The game may mix Player 1 and Player 2 audio together into both speakers, or pan them hard left/right. There is rarely a fix for this; you generally have to accept that you will hear the other player's game sounds. Drag and drop the controller icons into the screen slots (e
If all boxes are checked, congratulations! You have successfully installed and configured .
Press the arrow. Nucleus Co-op will begin opening multiple instances of the game and automatically resizing them. In-Game Setup (Zombies) :