Split-screen on PC

Ikki Unite

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

16Verified handler

Handler “Ikki Unite” by Talos91, version 1

P4+12 more players

What works

With Nucleus Co-op, up to 16 players can play Ikki Unite together on one PC, each in their own part of the screen, with controllers, keyboard and mouse or several keyboards and mice. The free community handler “Ikki Unite” by Talos91 does the setup and was checked by hub moderators: version 1, updated 19 Sept 2025. Ikki Unite is a shooter, indie and arcade game from 2023.

Players16
ControllersSupported
Keyboard and mouseSupported
Several keyboards and miceOne per player
Hub moderatorsVerified

How to play Ikki Unite 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 Ikki Unite handler
In Nucleus Co-op, search the Hub for Ikki Unite and install its handler, or download the handler file from this page and drop it on the Nucleus window. Then show Nucleus where Ikki Unite 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.
Playing with several keyboards and mice? Press End once everything is in place to give each window its own cursor.
Launch and connect
Press Launch: Nucleus opens one copy of Ikki Unite 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
Ikki Unite 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, or one keyboard and mouse per player. Controllers · Keyboards and mice
A PC that can run 16 copies
Each player runs their own copy of Ikki Unite, 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

Vampire Survivors like game but with up to 16 players co-op.
Split-screen setup guide.
Create a multiplayer room in one instance and join in the others using the room ID code, you can click on copy room ID with your main mouse cursor and paste the ID in the other instances to join.
If you use keyboards/mice after the instances open press the END key once to lock the input for all instances to have their own working cursor. Press the END key again to unlock the input when you finish playing.
Read the FAQ if you have any further questions and want to know more about Nucleus Co-op.
Handler by Talos91. Support the Nucleus Co-op team if you love the project.

About Ikki Unite

With up to 16 players, this is roguelike action, but united! "You can't riot with just one or two people!"The legendary "bad game" that once had people scoffing is back, and this time it's time to unite! This is roguelike action…but united!

Summary from IGDB