Lights Out

Goal: Turn all the lights off to win the puzzle.

How it works: Click any light to toggle it on or off – but clicking also toggles the lights directly above, below, left, and right of it.

Strategy: Think ahead! Each press affects up to five lights at once. Lights on the edges and corners affect fewer neighbors, so use that to your advantage.

Undo: Click Undo (or press Ctrl+Z / Cmd+Z) to reverse your last move. You can undo as many times as you like.

Tip: Every puzzle is guaranteed to be solvable. Try working row by row from top to bottom – turn off each light in the current row by pressing the light directly below it.

Lights Out

Toggle lights on a grid – but each press also toggles its neighbors. Turn them all off to win!

Moves: 0
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