Collect the snow with your rotating square to prevent snow drifts rising above the line.
Use power-ups to slow down time, increase the size of your square and melt the snow.
Build up power to use a screen-clearing smart bomb.
When the snowdrift builds up at the bottom, use the mouse button to heat up your cursor to melt the snow.
Avoid collecting the fireballs as they will melt the snow when they land.