Select the primary game executable (e.g., t6mp.exe for Multiplayer or t6zm.exe for Zombies). Step 4: Configure the Layout

Running two instances or an expanded resolution of the game requires a decent dedicated graphics card (GPU) and processor (CPU).

Download the latest version from their official site. Step-by-Step Installation Guide

Installed via Steam or Plutonium.

To get started, follow these steps provided by the Steam Community :

Before diving into the technical solutions, it is important to understand the fundamental challenges. The official PC version of Call of Duty: Black Ops 2 does not natively support split-screen functionality. While consoles were designed for shared living-room experiences—allowing up to four players to play split-screen co-op on one system—the PC release prioritized online multiplayer instead. Developers often cited hardware variability, development costs, and the perception that local co-op is a niche feature for PC gaming as reasons for its exclusion. Activision and Treyarch never patched split-screen into the Steam version, leaving a void that the modding community has worked to fill.

While Nucleus Co-op is the standard, some community mods on platforms like Plutonium may offer native, built-in support for split-screen, which can sometimes be more stable.

Make sure you are using a clean install of the game.