Step 1 – Download the Mod

Step 2 – Extract Files

Step 3 – Locate Your Black Ops 1 Installation Folder

Step 4 – Copy Mod Files

Step 5 – Configure Controllers

Step 6 – Launch the Game

Troubleshooting Method 1:

Before installing anything, ensure your system meets these requirements:

A. Manual Configuration (Most Reliable)

seta cl_maxPing "100"
seta scr_game_allow_join_during_match "1"
seta party_enable "1"
seta party_minplayers "1"
seta party_maxplayers "2"
seta scr_game_allow_join_during_match "1"

bind F12 "xinput_cycle_device"
bind F11 "xinput_connect_controller 1"

B. Using a Split-Screen Launcher (Easier)

If the direct mod doesn’t work for you, Nucleus Co-Op is the gold standard for split-screen on unsupported PC games. It works by running multiple instances of the game and merging their display windows.

| Problem | Fix | |--------|-----| | Controller not recognized | Use DS4Windows for PS4/PS5 controllers; Xbox works natively. | | Game crashes on launch | Run the split-screen tool as admin; disable Steam overlay. | | Only one screen shown | Check your display settings → Extend desktops (not duplicate). | | No sound for player 2 | Normal – PC version mixes all audio. |

This process requires a legitimate copy of the game and is performed entirely at your own risk. Modifying game files can sometimes lead to instability. Additionally, the native PC version of Black Ops 1 is notorious for having an unstable split-screen implementation (players often experience low frame rates or crashes). For the best modern experience, many PC users prefer the "Redacted" or "Plutonium" client mods, but this guide focuses on the standard Steam version using official methods.