South Pole: an evil poacher is willing to capture various Antarctic animals by trapping them into igloos. Prevent those igloos from being built, by properly assembling the ice blocks and melting them! Stained ice blocks fall from the sky, grouped by three, going to build the igloo walls. These blocks have a special property: if you line up three or more of the same colour, either horizontally, vertically or diagonally, they melt and disappear.