For no reason, you just want the whole world to be covered by ice and snow. Drive huge snowballs, destroy those towering buildings, see how those hiding guys survive the winter.
steps
1·Find a proper desk or a commodious clearing
2·Project game scene to the desk or the clearing
3·Walk around the scene to control the location of snowball
4·Twirl cellphone to control the shooting direction of snowball
5·Win!