If you want to play Zombies maps beyond the original Kino Der Toten, you'll need to install the Zombies Map Pack:
on your keyboard to force the other instances to join the host. Essential Tips for a Smooth Experience Controller Setup : If you are using PS4 or PS5 controllers, you may need DS4Windows to ensure they are recognized as Xinput devices. Antivirus Warnings
: Right-click NucleusCoop.exe , go to Properties > Compatibility , and check "Run this program as an administrator". 2. Download and Add the BO1 Handler Open Nucleus Co-op and navigate to Download Game Handlers .
Locate your BlackOps.exe file (typically found in your Steam local files) to link the game. :
Running two instances of the game is more taxing on your hardware. Ensure you have a modern GPU and at least 8GB of RAM. Method 1: Using the Nucleus Coop Tool (Recommended)
Once you have the install working, these maps offer the best experience for local play:
Assign your controllers (gamepads) or keyboard/mouse to each player by dragging them to the split-screen layout. Set the number of players to for Zombies in the settings. Launch & Sync: Press Play . Nucleus will open two separate game windows.
the file > Open with > Notepad .