Install unicode-screensaver by entering the following commands in the terminal:
sudo apt update sudo apt install unicode-screensaver
Description:
screensaver displaying unicode characters
The unicode-screensaver is a simple screensaver application that repeatedly randomly picks an unicode character and displays it in a very large font size together with its unicode code point and the character name. . It works with xscreensaver or gnome-screensaver.
Homepage: http://www.joachim-breitner.de/projects#unicode-screensaver
Version: 0.5-1build1
Section: universe/x11