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

-Reduced the strictness of OneDrive checks.
-Fixed SteamlessPatch line bugs preventing the launching of some handlers.
-Added missing error handling in Microsoft WebView2 Runtime installation check.
-Fixed bugs with Game.ExecutableNames preventing the clicking of the Play button.
-Fixed a bug in the new "Sort Games" method.
-Added customizable text for the custom hotkeys feature.
-Added a new drag and drop handler feature, can now add a game/handler to Nucleus Co-op by dropping a .js, .zip or .nc on the Nucleus window and follow the usual steps like a regular download or extraction.