Fillzone Duo - multiplayer puzzle game

Fillzone Duo is a free online flash game of the category puzzle games.

Challenge other players hard A.I. to fill the board with one color by swapping the tile colors in this challenging virus-like puzzle game! Play strategically and smart to beat your opponent. Make it far enough against the challenging A.I. and you get your moves challenged by thousands of others.

Click on the color that fills the board from the top left. When challenging and opponent you have to finish before they do.