TermSaver is a  cool screensaver that can run from the command-line interface or terminal in Ubuntu/Linux. TermSaver isn’t supposed replace other screensavers that come with your desktop such as GnomeShell, Unity, KDE, or other Desktop Environment.

And it also might not be able to carry out the actual purpose of a screesaver since it lacks a lot of pixel movements (screen animations), which otherwise helps to prevent “screen burns” on display devices.