SWITCHOFF!
One tap flips a light and its neighbours. Can you turn the whole board off?
How to play
- Tap any tile to flip its cross-shaped group.
- Turn every yellow light dark to finish the level.
- Try to use fewer moves. Undo a mistake or ask for a hint whenever you need one.
Keyboard: Tab to a tile, use arrow keys to move focus, and press Enter or Space to flip it. All other controls work with Tab and Enter.
Every level starts solvable. Hints show one step in a valid solution, which may not be the shortest. Every tile tap earns 10 points, plus 5 for each net light removed and 100 for solving a level. Undo reverses that move’s points. Restart or changing levels resets the points. There is no timer, life limit or sound. Pause covers the board and blocks moves; Restart restores the same puzzle.
Quick facts
Genre: logic puzzle
Price: free
Download / signup: neither required
Platforms: mobile and desktop browsers
Controls: touch, mouse or keyboard
Mode: single player
Small grid. Big possibilities.
12 selectable levels across 3 × 3, 4 × 4 and 5 × 5 boards. Unlimited undo and hints. Progress lasts until you reload or leave the page; any level can be selected again.
Questions, answered
What is Switch Off?
A logic puzzle where each move flips a tile and its immediate horizontal and vertical neighbours. Clear every light to win.
Is it free? Do I need an account?
It is free and runs directly in your browser. No account or app download is required.
Can I play on my phone?
Yes. Tap the tiles on mobile, or use a mouse or keyboard on desktop.
Can I get stuck?
Every board remains solvable. Use Undo, Hint or Restart if you need a fresh approach. There is no game-over penalty.