Starting from the top-left cell, press a color button to expand the flood region. Fill the entire board with a single color within the move limit to win.
Selecting a color converts the top-left connected region to that color, and any adjacent cells of the same new color are absorbed into the region. You cannot choose the color the current region already is.
The bold-outlined area is the current flood region. Each color selection expands it by absorbing neighboring cells of the chosen color.
Tip
Look for directions where a large cluster of one color borders the flood region — absorbing a big chunk at once saves moves.
Color Flood is a sequential decision-making task that requires planning several moves ahead to choose the optimal color order. It activates processing speed, visual pattern recognition, and prefrontal planning circuits simultaneously.