Hints: 2001:City Some city blocks consist of more than one building. You might consider going over the city map systematically. Sometimes you can also click on a front door to move on. When you are looking for the lightswitch in The Dark Room, try to look for a hidden link by moving your mouse on the screen. If your mouse pointer turns into a pointing hand, you have found the switch. Click on it. If you are having difficulties finding the hidden lightswitch in time, try to move your mouse to the point on the screen where an imaginary vertical line, just right of the text, and an imaginary horizontal line, just below the door image, meet. There you'll find the switch. Make sure you have found all numbers before you try to dismantle the bomb, as there is no way back.