The aim of the game is to switch all the lights on the board. If you select one field the neighbouring fields (left, right, up and down) inverse their color.
Buttons: Switch off the lights - closes a game and clears the board, Random start - starts a new game with random layout of lights, Simple start - starts a new game with simple layout of lights, Information numbers: 1. the number of moves, 2. time of the game in seconds.