Zero Fill

Zero Fill is a puzzle game where you change the values of squares to bring every grid to zero. Clicking a square reduces or increases its value and also affects its neighbors, so you must plan your moves carefully.

Campaign puzzles

The Campaign has 75 handcrafted boards of increasing complexity. Each board limits the number of moves you can make; you can use undo and reset as you work to clear the grid.

Create and play boards

The Creation Center lets you make and share your own boards, and play boards made by other players using Share Codes. The Random Boards Generator provides more boards to play after the Campaign.