1.) If you are using a PS4 or PS5 controller, you have to use the DS4Windows Program.[github.com]

2.) Download the latest Nucleus Coop Program[github.com] to play split-screen. Password is "nucleus" . (OPTIONAL: Use the 7zip[www.7-zip.org] program to extract, if needed.)

3.) Extract and place the Nucleus Coop files you downloaded in a new folder. (Name that folder anything. I named mine "Nucleus Coop".)

4.) Place the folder you created into C:/Program File (x86).

5.) Make sure Borderlands GOTY is located on the same hard drive as the "Nucleus Coop" folder (in this example, it is C:/). If not, put them on the same hard drive. But do not put the "Nucleus Coop" folder into your Borderlands GOTY directory.

6.) Right click on the program, "NucleusCoop.exe", go to properties, go to the "compatibility" section at the top, check the box marked "Run this program as an administrator".

1.) Do the prerequisites.

2.) Start "NucleusCoop.exe".

3.) Click on the "Download Game Scripts" button in the bottom left.

4.) Search for "Borderlands". Find "Borderlands". Click on it, then click "Download".

5.) It will finish, then pop up with a dialogue. Click yes, then find your Borderlands executable located in "your game directory"/Binaries/Win64/BorderlandsGOTY.exe. (You can find "your game directory" by right clicking on the game, then going to manage, then click on browse local files.)

6.) Set up your controllers by clicking on the small box below the keyboard icon. Drag your controllers into your set up configuration. If you have a multi-monitor setup, you can also setup each screen for split-screen here!

7.) Hit the right arrow button in the top right, below "Mod version", then the "Play" button.

8.) Lastly, ingame, have one person start a public game. Then, have the other people go to "Match Browser" and join that game.

10.) (OPTIONAL STEP: This will reduce startup time) Exit the Nucleus Coop application. Inside the "Nucleus Coop" folder, go into "scripts", right click on "Halo The Master Chief Collection", click "edit", do ctrl+F, find 30, change 30 to 3, and save and exit. Reopen the Nucleus Coop application.

"Missing cfg".

Start the game solo, then do Nucleus Coop.

Frozen on the "Pausing for 30 seconds" window or the "Creating raw input" window.

Put the "Nucleus Coop" folder you created into a different location, such as C:/Program Files (x86). Also disable the "Show Status Window" in Nucleus Settings. This is a new feature introduced in the last version but is causing issues for some users.

Pop window that says "ERROR: Exception in ResetWindows for...".

Go to the "Borderlands GOTY" script, and increase the pause time from 3 to 4, 5, 6, etc. Also disable the "Show Status Window" in Nucleus Settings. This is a new feature introduced in the last version but is causing issues for some users.