Fill a grid with numbers starting from one, with each number sideways or diagonally next to the previous one. Some squares will be pre-filled so you’ll have to work with those to fit all the numbers in.

As the grids get bigger, the problem gets trickier…

All levels can be solved, but if you’re really stuck please contact us. Some level solutions can be found here.

It’s one of GameKeys hand-picked mobile family games.