Snappywords - Puzzles & Word Games - Light Up Puzzle
Light Up Puzzle is a logic game where you place light bulbs on a grid so that all white cells are illuminated. A bulb shines horizontally and vertically until its light is blocked by a black cell. No two bulbs may shine on each other directly. Some black cells contain numbers indicating how many bulbs must touch them. Solving the puzzle requires logical thinking and foresight, rewarding you with a satisfying moment when the entire grid lights up.

5 Tips for Playing Light Up Puzzle Successfully

1. Start with the numbers

Place bulbs next to black cells with numbers first, since these give strict requirements.

2. Watch the sight lines

Check which cells are already lit by existing bulbs to avoid unnecessary placements.

3. Avoid conflicts

Make sure bulbs do not directly shine on each other.

4. Secure empty cells

Mark squares where no bulb can go to maintain a clear overview.

5. Combine clues logically

Use the information from numbered black cells and lit areas together to solve the grid step by step.

More games

Minesweeper is a logic game where you avoid mines, uncover safe cells, and use numeric clues to strategically locate all hidden bombs.

Play now

In Hitori, you shade cells so each number appears only once per row and column – with no adjacent black cells and connected white cells.

Play now

Place a diagonal in each cell following number clues, connect everything into one network, and avoid creating any closed loops.

Play now

Connect dots into a single closed loop – go straight through white circles, turn at black ones, and follow the number clues for correct line lengths.

Play now

Fill the grid with numbers – each appearing once per row and column – while following all greater/less-than clues between adjacent cells.

Play now

In Pipes, you rotate pipe pieces on a grid to form one continuous network – with no open ends and no closed loops.

Play now

We value your opinion

Do you feel there's something we can add or improve? Are there features missing that you'd like to have? Perhaps you have suggestions for how we can make this site better for you? We're always grateful for your input.