It is late, and the town should be asleep. Switch off every light.
Tap a window to flip its light. The windows right above, below, left and right of it flip too.
Finish in as few moves as the goal to get three moons. Stuck? A hint shows a window worth tapping, but then two moons is the most you can get.
Keyboard: arrow keys to move, Enter or Space to tap, U to undo.
