The popular Flurry screensaver from the Mac now on the iPhone and iPad
This is a direct port of Flurry for browsers (https://github.com/RoyCurtis/Flurry-WebGL), which in turn, is a port of Flurry for macOS (https://github.com/calumr/flurry)
In keeping with tradition, Flurry for iOS is also open source:
https://github.com/satishmaha/Flurry-iOS