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How to play
Tap a light: it and its neighbors above, below, left and right flip. Switch them all off.
See the full rules →0Moves
-Best
How to play
Get started in a minute
- The grid starts with some lights on.
- Tap any light: it and its orthogonal neighbors (above, below, left, right) switch state.
- The goal is to have all the lights off at the same time.
- Try to solve it in the fewest moves. Every board has a solution.
Controls by input type
- Mouse/touch: tap the light you want to toggle.
- Keyboard: use Tab to move through the lights and Enter or Space to toggle the one in focus.
Tips
- Tapping the same light twice undoes the move: a tap is its own inverse.
- A common tactic: clear row by row, top to bottom, tapping the row below to fix the row above.
- The order of taps doesn't matter for the final result, only the set of lights tapped.
Questions about Lights Out
Frequently asked questions
It's a grid of lights that are on and off. When you tap a light, it and its four orthogonal neighbors flip state. The goal is to leave the whole grid switched off.
Yes. Each board is generated from the all-off grid by applying random taps. Since every tap can be undone by tapping the same light again, there is always a way back to the all-off state.
4x4, 5x5 (the classic) and 6x6. Larger grids usually take more moves and more planning. Each size keeps its own best score.
For the final result, no: what matters is the set of lights tapped, since tapping the same light twice cancels out. For the move count, avoiding repeated taps helps you beat your best.
Yes. The lowest number of moves for each size is stored only in your browser, in your device's local storage.
No. Lights Out on Cortex Jogos Web is free, skill-based, with no betting, no prizes, and no real money.
Explore the rest of Cortex Jogos Web
Also play Towers of Hanoi, Peg Solitaire, Mastermind, Lights Out and Maze. Get to know the project in About us or see how we handle your data in the Privacy Policy.