Terra

Sprout, a seed-sowing drone, flies the edge of a green patch on a small dusty planet. Draw a line out into the dust and back to the green, and the side without the storm turns green, trees and all. Draw slow for double points, if you dare: the storm wrecks any line it touches, sparks patrol the green's edge, and if you stop mid-line a fuse burns along it toward you. Green 75 percent of the planet to clear a round. From round 3 there are two storms, and splitting them with one line ends the round at once and raises your multiplier for the rest of the run.