Try to light up all the squares in the grid by flipping combinations of them.
Click in a square to flip it and some of its neighbours. The diagram in each square indicates which other squares will flip.
Select one of the 'Random' settings from the Type menu for more varied puzzles.
Courtesy of Simon Tatham's Puzzle Collection via the MIT license.
More Puzzles Games & Fun Stuff
Safecracker, Binary, Blackbox, Bridges, Blue Cube, Dominosa, Galaxies, Haunted Mirror Maze, Ken Ken, Light up, Loners, Magnetic Field, Map, MineSweeper, Netwalk, Pattern, Pearls, Range, Rectangles, Signpost, Skyscrapers, Slant, Slitherlink, Sudoku, Tents, Unequal etc.
We hope that the free math worksheets have been helpful. We encourage parents and teachers to adjust the worksheets according to the needs of the child. For more difficult questions, the child may be encouraged to work out the problem on a piece of paper before entering the solution. We hope that the kids will also love the fun stuff and puzzles.
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