Fill the Box

Draw from each colored square, cover every open space, and keep paths from crossing.

Easy Medium Hard Expert

Choose a level, then drag from a colored starting square to fill open spaces.

How to play

Fill every available square on the grid with colored paths.

Start dragging from any colored square.
Move up, down, left, or right into empty open squares.
Lines cannot cross, share a square, enter closed-off spaces, or start from another color's square.
Each starting square shows how many more spaces that color can fill; ∞ means there is no limit.
On Easy and Medium levels, you do not have to use up every color's number; colors marked ∞ can fill any remaining open route.
Drag back over a path of the same color to rewind it.