By bending electrical wires you have to switch on all of the lamps on the game field and save all of the cats. You can pass a lamp only once. On fast and successful passing through every doubled levels, you get an additional Bonus level where you can make extra points by switching electrical devices. But you can keep all collected points only in case you have lighted all of the lamps and preserved your life (battery). At the begging of the game you receive 3 lives (batteries). Passing 6 levels grants you extra lives (batteries).