Darkness shooting

Robot army from above in the dark will come to invade. Tap the robot that was illuminated by the lighting, you can defeat it fired a laser cannon. However, lighting and laser guns because they share the energy source, after the laser cannon fire will decrease range of lighting. Energy will gradually recover in automatic, but you can be fast recovery by tapping or swiping the generator (own area below). When the robot reaches the self-area the game is over.