zStardust2 Screensaver is a free screensaver app that fills your entire screen(s) with falling multi-colored stardust.
This screensaver has a lot of movement and is simple but quite appealing as it fills your screen with hundreds upon hundreds of multi-sized and colored pieces of stardust falling from screen top to bottom.
zzStardust2 Screensaver comes in a zip file as a .scr, which is typical of most screensavers. To use it, right-click on zzStardusts.scr after extracting it from the zip file and select "Install" or "Test" to preview it before installing. Also from there, the screensaver settings can be configured which at this time only includes the ability to define the number of stars (up to 10,000).