Split-screen on PC

SM64 Coop Deluxe

Up to 16 players on one PC, with controllers or keyboard and mouse.

16Verified handler

Handler “Super Mario 64 PC Port Co-op DX” by Talos91, version 2

P4+12 more players

What works

With Nucleus Co-op, up to 16 players can play SM64 Coop Deluxe together on one PC, each in their own part of the screen, with controllers or keyboard and mouse. The free community handler “Super Mario 64 PC Port Co-op DX” by Talos91 does the setup and was checked by hub moderators: version 2, updated 8 Sept 2025. SM64 Coop Deluxe is a platformer game from 2024.

Players16
ControllersSupported
Keyboard and mouseSupported
Several keyboards and miceNot supported
Hub moderatorsVerified

How to play SM64 Coop Deluxe split screen on PC

Get Nucleus Co-op
Download Nucleus Co-op, free for Windows 10 and 11, and unzip it into its own folder, for example C:\NucleusCo-op. There is no installer.
Keep it out of Program Files, your user folder and OneDrive.
Download Nucleus Co-op
Install the SM64 Coop Deluxe handler
In Nucleus Co-op, search the Hub for SM64 Coop Deluxe and install its handler, or download the handler file from this page and drop it on the Nucleus window. Then show Nucleus where SM64 Coop Deluxe is installed.
Download the handler file (.nc)
Take a seat
Each player presses a button on their own controller to join and takes a spot on the screen. Pick a layout that fits your players.
Launch and connect
Press Launch: Nucleus opens one copy of SM64 Coop Deluxe per player and lays the windows out on your screen. Then link them in game, usually one player hosts a LAN or online session and the others join it. The handler notes say how.

What you need

A Windows 10 or 11 PC
Nucleus Co-op runs on Windows only. System requirements
SM64 Coop Deluxe for Windows
Installed on that PC. Nucleus starts every player's window from that one install.
Nucleus Co-op, free
With .NET Framework 4.7.2 or later and the Visual C++ 2015–2022 runtimes (x86 and x64). Download
Something to play with
One controller per player; one player can use the keyboard and mouse. Controllers
A PC that can run 16 copies
Each player runs their own copy of SM64 Coop Deluxe, so the PC carries several times the usual load. Lower the graphics settings if it struggles. Performance tips
A multiplayer mode
Nucleus links the windows through the game's own LAN or online mode; the handler takes care of it.

Handler notes

This is for the native PC port Co-op DX version, not emulated: https://sm64coopdx.com/.
Get the directx version for Windows and launch the main game at least once before running the handler so the game's config files get created.
Split-screen setup guide.
Connect the instances by hosting a direct connect game in one instance and joining in the others. Change your character skin in the player options in the main menu.
Read the FAQ if you have any further questions and want to know more about Nucleus Co-op.
Handler by Talos91 with the help of Mikou and supersmo. Based on the og handler for sm64ex-coop by Zense. Please support the Nucleus Co-op team.

About SM64 Coop Deluxe

sm64coopdx is an online multiplayer project for the Super Mario 64 PC port that supports widescreen, uncapped FPS, and has many toggleable options for customization to fit your desired experience. It has multiplayer up to 16 players and an ever growing powerful Lua modding API that allow modders and players to enjoy Super Mario 64 in more accessible and unique new ways!

Summary from IGDB

Version history

v2Current
sdl2 line for Nucleus 2.4.0, controllers are no longer inverted
8 Sept 2025VerifiedDownload (2.2 KB)
v1
First Release
4 Mar 2025VerifiedDownload (2.2 KB)

Version details, files and scripts

Comments 1

kevsut19842 years ago
This is my favourite Nucleus co Op game. The old handler was a nightmare because the old Mario 64 didn’t have a controller assign option in the game settings. One controller would control every instance even with Hid Hud and DS4 windows running. The Deluxe version has its own setting to counter that. Thank you Talos. You always make the best handlers and I greatly appreciate your work. 💪🏻