Here is how to do it with a few lines of bash:

  function matrix () {
      echo -e "\e[1;40m"
      clear
      while :; do
          echo $LINES $COLUMNS $(( $RANDOM % $COLUMNS)) $(( $RANDOM % 72 ))
          sleep 0.05
      done|awk '{
          letters="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789あいうえおかきくけこさしすせそたちつてとなにぬねのはひふへほまみむめもやゆよらりるれろわをん@#$%^&*()";
          c=$4; letter=substr(letters,c,1);a[$3]=0;for (x in a) {o=a[x];a[x]=a[x]+1; printf "\033[%s;%sH\033[2;32m%s",o,x,letter;
          printf "\033[%s;%sH\033[1;37m%s\033[0;0H",a[x],x,letter;if (a[x] >= $1) { a[x]=0; } }
      }'
  }

You can use the matrix effect by adding `<!-- effect=matrix -->` to the top of your slide! :)

These effects are supported right now: fireworks, explosions, stars, matrix, plasma. I plan to add more asciimatics effects soon!

I'm hoping for <-- effect=gol --> for a Game of Life simulation. For whatever reason, it comes up in my talks often. It seems I exude geekness acme whenever I talk about hacking and self-propagating code.

That would be awesome! I'll work on it and add it some time! Opened https://github.com/vinayak-mehta/present/issues/45 to track it :D

You mean like this? https://github.com/abishekvashok/cmatrix

Relies on the asciimatics Matrix effect, looks like: https://github.com/peterbrittain/asciimatics/blob/master/asc...

Yes! `present` is built on asciimatics.