Link to this puzzle: by game ID by random seed
Logic Puzzles
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PLAY
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auxiliary files
lightup.js and
lightup.wasm.
Place light bulbs in the grid so as to light up all the blank squares. A light illuminates its own square and all the squares in the same row or column unless blocked by walls (black squares). Lights may not illuminate each other. Each numbered square must be orthogonally adjacent to exactly the given number of lights.
Click on a square to place or remove a light. Right-click to place a dot indicating that you think there is no light in that square.
We are seeing a lot of web and mobile applications that mimic the way logic puzzles works and seek to take some of the popularity away from this new platform. Some developers take advantage of this success to launch applications and provide us with alternatives to spend our free time simply using our browser. We leave you some alternatives to Lightup game: