The object of Lights Out is to shut off all the lights in the game board above. To do this, you must click on the light bulbs. When you click on a light bulb, it will switch, either from ON to OFF or from OFF to ON. Not only does the light bulb you click switch, but so does the bulb above, below, to the right, and to the left.
When you click on the NEW button, a new random puzzle will be generated. Every puzzle is possible! You can set the difficulty of the puzzle by clicking on one of the DIFFICULTY numbers, which indicate the shortest number of clicks you need to shut off all of the light bulbs. If you get stumped on a puzzle and you want to retry it, click on the RESET button.