By Knexio · Updated May 2026
Color Flood is a puzzle game where you flood-fill a grid starting from the top-left corner. Change colors to expand your territory and fill the entire board in the fewest moves possible!
Click a color button to flood-fill from the top-left corner. All connected cells of the new color become part of your territory. Goal: Fill the entire board in 25 moves or less. Each move expands your flooded area.
Look for the color that will expand your territory most. Don't just match the immediate neighbors—think ahead. Corner areas are hardest to reach—plan your path there.
Color Flood is really about managing territory, not just picking a pretty color. Every move should grow your flooded area in a way that opens up future choices, especially near the center of the board where expansion can reach more cells at once. If you think one or two turns ahead, you will notice that some colors create wide paths while others create dead ends. That planning layer is what turns a simple flood-fill puzzle into a satisfying strategy game.
Chasing the nearest matching color without checking how it changes the rest of the board. Leaving isolated corners for too long, which makes them harder to absorb later. Using moves that look large in the short term but trap the flood into tiny regions. Ignoring the move limit and waiting until the board is already hard to recover.
The game is fun because every move changes the shape of the puzzle in a visible way. You can see your territory grow, and that makes each decision feel meaningful even when the rules stay simple. It also scratches the same itch as great puzzle games: you try a path, watch the board react, and immediately learn something for the next move.
Picking the nearest matching color without thinking about the next two turns. Leaving tiny isolated pockets that are hard to absorb later. Using moves that look strong immediately but trap the flood in a bad shape. Treating the move limit like an afterthought instead of a core part of the puzzle.
Yes, all games on Knexio are completely free to play. There are no hidden charges, subscription fees, or in-app purchases. We support our games through non-intrusive advertisements.
No downloads required! All our games run directly in your web browser. They work on desktop computers, laptops, tablets, and smartphones. Just visit the page and start playing.
Most games automatically save your high scores and progress in your browser's local storage. Your best scores will be remembered even if you close the browser, as long as you don't clear your browsing data.
Absolutely! All Knexio games are fully responsive and optimized for mobile devices. Touch controls are implemented for games that require precise input. The interface automatically adapts to your screen size.
Most games include optional sound effects. Look for a sound/mute button in the game interface. You can enable or disable sound based on your preference. We keep sound subtle and non-intrusive.
Try to grow the largest connected area you can while keeping future color options open. The best early moves usually expand your reach without boxing you in.
Plan two moves ahead and avoid creating isolated pockets. Efficient play comes from choosing colors that keep your flooded region flexible.
Ask whether the color grows your area and keeps future options open. The best move is usually the one that helps both now and later.
The center usually connects to more cells, so flooding through it often gives you more options than hugging one edge too early.
Color Flood is a pure puzzle about turning a busy grid into one connected territory. The challenge is not just to finish the board, but to do it with a smart color path that keeps future moves efficient.
That makes it a good mix of planning and experimentation. You can try a route, watch how the flood spreads, and improve your next attempt by reading the board more carefully.
Like all Knexio games, it is free to play in the browser and tuned to stay fast on desktop or mobile.