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Lights
Out
Turn off all the lights by toggling cells!
Easy
Medium
Hard
Expert
Moves
0
Best
—
Lights On
?
Toggle cells to turn off all the lights!
❓ How to Play
🔀 New Puzzle
🔄 Reset
🌑
Lights Out!
🔄 Replay
🔀 New Puzzle
❓ How to Play
💡 The grid starts with some lights
ON
(yellow) and some
OFF
(dark).
👆 Click any cell to
toggle it
and its direct neighbors (up, down, left, right).
🎯 Goal: turn
all lights OFF
.
📉 Fewer moves = better score! Your best is saved per difficulty.
⚡ Every puzzle is
guaranteed solvable
— it was generated by starting solved and applying random valid moves.
Got it!