Flood Fill — Free Online Color Puzzle

A free browser-based Flood Fill puzzle game. Starting from the top-left corner, choose colors to expand your territory until the entire board is one color. Three board sizes with move limits challenge your strategic thinking.

How to Play

Start from the corner

The game begins with a randomly colored grid. The top-left cell is your starting territory.

Pick a color

Click one of the 6 color buttons below the board. Your territory floods to absorb all adjacent cells of the chosen color.

Expand strategically

Plan ahead to capture the largest groups of cells with each move. Avoid wasting moves on small clusters.

Fill the board

Make the entire grid one color before running out of moves. Try to beat your best score!

Conquer the board by flooding it with a single color in minimal moves

0/22 Moves

— Best

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Features

Three difficulty levels: 10×10 (easy, 22 moves), 14×14 (normal, 25 moves), 18×18 (hard, 30 moves) 6 distinct high-contrast colors that work in both dark and light themes Best score tracking per board size — saved in your browser Mobile-friendly touch controls with responsive grid layout

Frequently Asked Questions

What is the Flood Fill puzzle?

Flood Fill (also known as Color Flood or Flood-It) is a strategy puzzle where you start from the top-left corner and choose colors to expand your territory, aiming to fill the entire board in as few moves as possible.

How many moves do I get?

It depends on the board size: 22 moves for 10×10 (easy), 25 moves for 14×14 (normal), and 30 moves for 18×18 (hard). These limits are generous enough to be achievable but tight enough to be challenging.

Is my progress saved?

Yes. Your best score for each board size is saved in your browser's local storage. It persists across sessions until you clear your browser data.

Does it work on mobile?

Yes. The game is fully responsive and touch-friendly. The grid and color buttons adapt to your screen size.

💡 Want us to improve this tool just for you?

We can — and it's free! Just send us a quick message with your idea. If you'd like to discuss it in detail, leave your email and we'll get back to you. You can stay anonymous.

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Who is this tool for?

🎮 Gamers 🎓 Students

Published 16 Mar 2026 Updated 21 May 2026