Turn 'em off! (Lights out)

"Turn 'em off!" is a puzzle based on the classic "Lights Out" released by Tiger Toys in 1995.

"Turn 'em off!" has two game modes: "all lights on" and "random". In either case you must turn all the lights off, but each action will commute the state both of the light bulb you selected and its neighbors!
You can choose the size of the game board and all puzzles are always solvable (even if some of them could be really hard!).

There is virtually no limit on the size of your game board, but I suggest you to take it easy: an excessive number of elements composing the game board could significantly slow down your device.