Light Switch
Light Switch is a free online lights-out puzzle game: tap any light to flip it and its four orthogonal neighbours on or off, and turn the whole grid dark in as few moves as possible. Choose 3x3 or 5x5 grids, earn up to three stars for an efficient solve, and play instantly in your browser with no install or account.
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Tap or click a light to toggle it and its neighbours. With a keyboard, use arrow keys to move the cursor and Space or Enter to press. Works on touch and desktop.
How to play Light Switch
- Every puzzle starts with some lights on; your goal is to turn them all off.
- Tap a light to flip it and its up, down, left and right neighbours.
- Lit cells switch off and dark cells switch on, so plan your presses.
- Solve in as few moves as possible to earn up to three stars.
- Switch between 3x3 and 5x5 grids, or hit New puzzle for a fresh board.