Lights Out - Free Online Grid Puzzle Game
Play Lights Out online for free — the classic grid puzzle game where you toggle lights to turn them all off. With a 5x5 grid and 27 hand-crafted levels from Beginner to Master, every puzzle has a guaranteed solution. Perfect for fans of logic puzzles, light switching games, and mathematical brain teasers. No download required.
How to Play Lights Out
- The grid has lights that are on or off. Your goal is to turn all lights off.
- Click or tap a light to toggle it — but it also toggles the 4 adjacent lights (up, down, left, right).
- Each press affects a plus-shaped pattern centered on the clicked cell.
- Turn off every light on the grid to solve the puzzle.
- Tackle 27 levels ranging from Beginner to Master difficulty.
- Every puzzle is guaranteed solvable — it just takes the right sequence.
Tips & Strategy
- Use the chase the lights technique: work top to bottom, pressing lights below any that are still on in the row above.
- The last row determines whether you've solved it — learn the specific patterns needed to clear it.
- Pressing the same light twice cancels out — avoid redundant moves.
- Order doesn't matter for the final state, but systematic solving helps you track progress.
- If you get stuck, restart and try the chase method from a different starting point.
- Master-level puzzles may require solving from the bottom up or using known parity patterns.
Frequently Asked Questions
Is Lights Out free to play?
Yes! Lights Out is 100% free to play in your browser. No download or account needed.
Can I play Lights Out on mobile?
Yes — the game is fully touch-friendly. Tap any light to toggle it and its neighbors.
Are all puzzles solvable?
Yes! Every one of the 27 levels is guaranteed to have a solution. Some just require more moves and cleverer sequences.
What's the best strategy for Lights Out?
The "chase the lights" method is the most reliable: solve the top row first, then use the row below to turn off remaining lights, working down to the bottom.
What size is the grid?
The classic 5x5 grid. Each press toggles the clicked light plus its orthogonal neighbors.