In the highly competitive game of Fill Zone Duo, you have the chance to play either against the Artificial Intelligence, or against other amazingly skilled players. Using strategy and crafty maneuvering, you need to figure out how to fill the entire board with one color before the opposing team does. In order to do so, you simply switch around the tile colors. You need to be fast though! Enough victories in Fill Zone Duo, and you can certainly take bragging rights to your friends. Just make sure one of them can not beat you. Otherwise, begin to place your bets!