Split-screen on PC

Mighty No. 9

Up to 2 players on one PC, with controllers or keyboard and mouse.

2Verified handler

Handler “Mighty No. 9” by Talos91, version 4

What works

With Nucleus Co-op, up to 2 players can play Mighty No. 9 together on one PC, each in their own part of the screen, with controllers or keyboard and mouse. The free community handler “Mighty No. 9” by Talos91 does the setup and was checked by hub moderators: version 4, updated 21 Mar 2025. Mighty No. 9 is a shooter, platformer and adventure game from 2016.

Players2
ControllersSupported
Keyboard and mouseSupported
Several keyboards and miceNot supported
Hub moderatorsVerified

How to play Mighty No. 9 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 Mighty No. 9 handler
In Nucleus Co-op, search the Hub for Mighty No. 9 and install its handler, or download the handler file from this page and drop it on the Nucleus window. Then show Nucleus where Mighty No. 9 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 Mighty No. 9 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
Mighty No. 9 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 2 copies
Each player runs their own copy of Mighty No. 9, 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

Cry like an anime fan on prom night! Read the handler notes in the UI carefully. Local Co-op for the Co-op EX and online race modes unlocked after beating the Call stage in story mode.

PCGamingWiki page.

Authors and Contributors of this handler: Talos91 from the Split Screen Dreams Discord. Black bars and FOV fix by czarman.

About Mighty No. 9

Mighty No. 9 is focused on 2D platforming with a blend of 2D and 3D artwork and animation. The player is able to run, jump and shoot projectiles at enemies they encounter. Furthermore, the player will be able to acquire both weapons and abilities from enemies they defeat. The game will feature an intro level followed by the eight main stages, which are freely chosen in any order by the player. At the end of each stage, Beck, the protagonist, must face one of the other eight "Mighty Number" units in a boss battle.[3] A final set of stages are unlocked at the end of the game, leading up to the final showdown. An additional level starring Call is also available at some point, provided through one of the completed stretch goals.

Summary from IGDB

Mighty No. 9 screenshots

Version history

v4Current
fov fix for vertical and new functions
21 Mar 2025VerifiedDownload (90 KB)
v3
fov and black bars fix fix
27 Nov 2021VerifiedDownload (90 KB)
v2
Fixes
24 Jul 2020VerifiedDownload (1.3 KB)
v1
first release
13 Feb 2020VerifiedDownload (1.3 KB)