I use unimatrix from github: GitHub - will8211/unimatrix: Python script to simulate the display from "The Matrix" in terminal. Uses half-width katakana unicode characters by default, but can use custom character sets. Accepts keyboard controls while running. Based on CMatrix.
sudo curl -L https://raw.githubusercontent.com/will8211/unimatrix/master/unimatrix.py -o /usr/local/bin/unimatrix
sudo chmod a+rx /usr/local/bin/unimatrix