Color Flood

How to play color flood

1. Choose the board size: 10×10 to start, 14×14 or 20×20 for a bigger challenge.
2. Tap a color (on the buttons below or directly on a cell). The whole connected region that starts at the marked corner turns that color.
3. Each time the region touches cells of the new color, it absorbs them and grows. You have a maximum number of moves, which you can see at the top.
4. You win when the whole board is a single color. If you run out of moves you can replay the same board with "Same board" or start a new one.

Strategy for flooding in few moves

The basic idea is to pick, on each move, the color that adds the most cells, but looking only at the next step is not always enough. Think about where it pays to expand: growing toward the center of the board leaves more of your region's edge in contact with other colors and gives you more options later.

If a color is left isolated in a corner, it is best to leave it for last and attack it when your region already surrounds it. Avoid painting with a color that barely appears on the board, because it adds few cells. The move limit comes from a solver that always picks the color that gains the most and adds a small margin, so with good judgment you can win with moves to spare.

Each color has its own symbol (circle, square, triangle, diamond, cross and star), so the game plays just as well with color blindness. Your best result for each size is saved only on your device.

Things to keep in mind

• The move limit depends on the board and is higher on the larger sizes; you can always win within the limit.
• Your best is the fewest moves you won with and it is saved per size, only in this browser.
• Each game uses a random board; "Same board" lets you retry the current one from the start.

Frequently asked questions