In the past, Windows screensavers included '3D pipes' where pipes grow and grow, '3D flying objects' where objects fly around the screen, '3D mazes' where maze spaces expand, and '3D text' where a ...
In the days when computer displays were CRTs, screensavers were essential software to prevent screen burn-in. Nowadays, LCD displays have become mainstream, so screen burn-in is hardly a concern, but ...