Tap on a color of a region to set the color to be filled with. Unset by tapping on the same color. By tapping on a contiguous region of a different color, the region is filled with the corresponding color you have set with, and then one move is taken. The counter on the top-right shows how much moves are left on the level. When no more moves are left and there are still two or more distinct colors in the grid, you lose. If the grid is filled with only one color, you win!