Also a rather cool little game I found in the /usr/games/ directory of the computer - or the server or whatever. It goes a litlle like this:

+    +
  +    +   +   *
    * +    @  +  +
Where (+) is a robot, (*) is a junkpile (of crashed robots), and (@) is you. You move around, trying to get the robots to crash into each other. You can teleport, but each level the robots get more numerous and it's harder to avoid them. A triumph of gameplay over graphics!