Aurora Screensaver
Clarke Design - https://www.clarkedesign.co.uk/software/

HOW TO INSTALL

1. Copy "Aurora.scr" into C:\Windows\System32
   (Windows will ask for permission - click Continue).
2. Type "screen saver" into the Start menu search and open "Change screen saver".
3. Choose "Aurora" from the list, click "Settings..." to customise it, then click OK.

To try it first, right-click "Aurora.scr" and choose Test (full screen) or Configure (settings).

If Windows SmartScreen says it protected your PC, click "More info", then "Run anyway".

Until you buy a licence, a small "Aurora trial" caption shows in a corner of the screen.
Click "Buy a licence" in the settings, then "Enter licence key..." to remove it.

HOW TO REMOVE

Choose a different screen saver, then delete "Aurora.scr" from C:\Windows\System32.