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Universal Split Screen has been superseded by Proto Input, which is part of Nucleus Co-Op.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

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Virtual super resolution

You may find that some games will not let you resize them smaller than some size, or that UI elements break. You can solve this by setting up a virtual super resolution.

On AMD GPUs

Right-click the AMD icon in the taskbar -> Open Radeon Settings -> Display -> check Virtual Super Resolution and GPU scaling. Then set the resolution to something like 2560x1440 or 3840x2160 in Windows display settings.

On NVIDIA GPUs

Right click desktop -> NVIDIA Control Panel
Open Display -> Change Resolution -> click Customize -> click Create custom resolution.
To set resolution to X by Y, set Horizontal Pixels to X and Vertical lines to Y (I would recommend either 2560 by 1440 or 3840 by 2160)
Click Test -> Yes to changes -> Ok
In the list of resolutions, select your new custom resolution, click Apply -> Yes to changes
Done. If you want to quickly switch between resolutions now, you can go to Windows settings -> Display -> Resolution

On Intel GPUs

Right-click desktop -> Graphics Properties -> Display
Open Custom Resolutions -> Add
Set Width to new width in pixels and Height to new height in pixels. (I would recommend either 2560 by 1440 or 3840 by 2160). Set Refresh Rate to 60
Open General Settings and select your new custom resolution in the Resolution menu
If you get an error ‘This resolution exceeds the maximum bandwidth capacity’, try updating your display drivers. If this does not fix it, try plugging in your laptop/computer into a secondary monitor, then use the AMD/NVIDIA instructions depending on which discrete GPU you have.