BLACKOUT: 3D Pipe Puzzle

The Earth sank into darkness. Thirty capitals are waiting, one district at a time. BLACKOUT is a 3D puzzle you hold in one hand. Every district is a cube of pipes. Drag a finger to turn the cube, tap a cell to rotate it. Current runs from the bright core across all six faces. Close the circuit and press POWER ON. The district lights up on the city map. THE STORY Experiments with artificial intelligence got out of hand, and the machine took the planet. There was only one way to stop it: cut the power across the whole Earth. Now the cities have to be brought back onto the grid. The first capital on the globe is Tokyo. THE CUBE Six faces, a 3×3 grid on each: 54 cells in all. Pipes cross from face to face, so you'll be looking at every side. A cell with a rivet is already in place and can't be turned. Easy has plenty of them. Expert has none, and the whole cube is yours. The map sets the…