Bored with Time to Kill?

Applications > Utilities > Terminal
Type or copy/paste the following:
List of Games: type the following
ls /usr/share/emacs/22.1/lisp/play
Start emacs: type the following
emacs
To Play a Game:
hold Esc + X
(enables you to type a games name to play)
Play Tetris: type the following
tetris
Quit emacs:
hold control, press X then C
To see a better example of what I’m talking about check this guy out.
