This is a wrapper around the magnificent Matrix visualization by Rezmason so you can enjoy it as a screensaver. All credit for the visuals to them.
Runs a local copy of the visualization (so it will work offline) and provides a UI to configure all settings:
Download from the Releases page, double-click to install, then open System Settings > Wallpaper > Screen Saver... > Other > Show all...
Warning
If you cannot open the "Options..." window for a screensaver, restart the System Settings app. This is an unfortunate bug in macOS that I can't do anything about.