Update!

Universal Split Screen has been superseded by Proto Input, which is part of Nucleus Co-Op.

Getting Started

Quick Start Important notes Virtual super resolution Goldberg Emulator Untested Games Setup x360ce Guide

Borderlands 2 Borderlands 3 Counter Strike Global Offensive Don't Starve Together Endless Space Factorio Garry's Mod Half-life Left 4 Dead 2 Minecraft Nuclear Throne Prison Architect Starbound Stardew Valley Sven Co-op Team Fortress 2 Terraria

Nuclear Throne

Nuclear Throne Setup

Download and install Nuclear Throne Together.
Run NuclearThroneTogether.exe as many times as you need.
Go to Settings -> Game and set Cursor to Default.
Go to Co-op. Set Use Steam to No. Click Host Game. Remember the port on this page (default is 5394), and click Host.
On the other instance, make sure Cursor is also set to Default. Go to Co-op. Set Use Steam to No. Click Join Game. Set IP/URL to 127.0.0.1 and port to the port (default 5394). Click Join.
Repeat for all instances. On the host instance, click Start.

Split screen setup

Install and run Universal Split Screen: see the Quick Start guide.
In options, load the NuclearThrone preset.
Go back to the Current window tab. Alt+tab into the first instance. Set the mouse and keyboard. Repeat for the other instances.
Click Start split screen. You should now be able to play. Press End to stop.

Default options

For reference, here are the default options. Nuclear Throne options