A zone program inspired by the old DOS game

Save the file zone-tunnels.el to disk and add the directory containing it to load-path using a command in your .emacs file like:

(add-to-list 'load-path "~/.emacs.d/")

The above line assumes that you've placed the file into the Emacs directory '.emacs.d'.

Start the package with:

(require 'zone-tunnels)

If you have Marmalade added as a repository to your Emacs, you can just install zone-tunnels with

M-x package-install zone-tunnels RET

Set zone-pgm-tunnels as one of the zone programs

(setq zone-programs
      [zone-pgm-tunnels])

and activate zoning by specifying a delay

(zone-when-idle 30)

Alternatively you can run zone-tunnels directly

(zone-tunnels)