Click the button in the top right corner of Nucleus Co-Op.
Nucleus Co-op works by launching multiple instances of a game on a single PC, assigning each to a different screen region (or monitor) and a different controller. For Black Ops 1 , a dedicated "handler"—a script that tells Nucleus Co-op exactly how to work with the game's files and networking—has been developed by the community. There are separate handlers for the game's and Zombies modes.
Drop textures and shadows to medium.
Inside Nucleus, search for "Black Ops" in the "Download Game Scripts" section. Download the script specific to Call of Duty: Black Ops 1 . Step 2: Configure Black Ops 1 for Split Screen black ops 1 zombies split screen pc install
: Your PC will run two independent instances of Black Ops 1 simultaneously. Ensure your CPU and GPU can handle twice the normal processing load. Software Requirements
How to Play Black Ops 1 Zombies in Split-Screen on PC: The Ultimate Installation Guide
Before launching, ensure your game is optimized for a dual-instance setup. Click the button in the top right corner of Nucleus Co-Op
Click on the button within the user interface. Type "Call of Duty: Black Ops" into the search bar.
The software will minimize and begin launching two individual windows of Call of Duty: Black Ops.
Extract the downloaded ZIP file into a dedicated folder on your PC (e.g., C:\NucleusCoop ). Do not extract it into your Steam game directory. There are separate handlers for the game's and Zombies modes
On a mid-range PC (GTX 1660, i5-9400F, 16GB RAM), Nucleus Co-Op runs Kino der Toten at a stable 50-60 FPS per player. The single-instance mod runs at near 90 FPS per player.
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Some manual guides and the official game manual mention that on the console versions, selecting from the main menu allows other players to join. However, on the PC version, this interface is either absent or non-functional without extensive modding. Some older forum posts suggest this could be used for split-screen with bots, but these methods are outdated, unreliable, and do not work for Zombies. For this reason, the Nucleus Co-op method is the clear winner for a proper co-op experience.
Nucleus Co-Op will now automatically launch two independent windows of Black Ops 1. Do not click on anything while the windows are opening, resizing, and positioning themselves.
Once you have the basics working, you can explore additional mods to enhance your experience. The , for example, is a powerful and user-friendly mod menu that supports all 11 Zombies maps, includes split-screen support, and offers a vast array of features like customizable weapon options.