This is a new and improved official version of the Nucleus Co-op application and is part of the SplitScreen.Me Github organization.
This new version is based off of the Nucleus Co-op Alpha 8 Mod build and features a ton of enhancements.

Note: Some Nucleus Co-op hook dlls and Goldberg emulator, used by Nucleus, can sometimes be detected as potential threats by Microsoft Defender and other anti-viruses or web browsers: this is 100% a false positive see here and here. You may have to allow Nucleus Co-op as an exception before extracting.

📚 Prerequisites

• .NET Framework 4.7.2 or higher: Microsoft direct download link.

• Microsoft Visual C++ 2015-2019 Redistributable (both x86 and x64): Microsoft direct download x86, Microsoft direct download x64.

• Microsoft Edge WebView2 (Only if the downloader gets stuck on loading screen): Microsoft Edge WebView2.

💻 Installation

• Installation Guide

• FAQ

• Download The Installer

• Download The Zip Archive (password : nucleus)

👥 Social

• Official website.
• Subscribe to the official Nucleus Co-op subreddit.
• Join the official Nucleus Co-op Discord server.
• Join the official Nucleus Co-op Patreon.

📝 Changelog for this release

• XInputPlus xinput1_4.dll fix for Windows 11.
• Changed old folder build of XInputPlus to 4.15, can use xinput1_3.dll for X2Dinput.
• Fixed Steamless setup not working properly in some cases.
• Fixed a bug where directinput devices could be disposed during devices discovery.
• Fixed a bug in the per-game options menu where UserProfileConfigPath and UserProfileSavePath were set to null when the menu was opened.