Unix games?? Havent heard about that before?   There are some games hidden in every unix based  operating system. These hidden files are accessable in  linux and Mac OS X.

Code:

ls /usr/share/emacs/21.2/lisp/play

For Newbies : Type this code in terminal window  (terminal is located in Applications/Utilities)

To play these games, open a new terminal window and type “emacs” and hit return. Once in emacs, press Esc then x to get to the prompt. Now you can type any of the files in the list to play them.

Eg:snake, tetris, pong

Check Ultimate Guide to make your own Linux Distro too !!
Spread the world and enjoy!!