Black Out

- Click/Tap a light to toggle it and its up/down/left/right neighbors. - Turn every light off to win. In later levels, blue lights are introduced. They cycle through colors (blue → red → off, or off → blue → red) adding complexity. - Each level's starting pattern requires more minimum moves to solve than the last OPTIMAL shows that minimum. - Clearing a level reveals a password for the next one - Enter it above anytime to jump back.