Each player is given a “home” area in which they must create a building using cardboard boxes and plastic bottles. When players are in their “home” area, they can use one or more soft balls to try to knock down their opponent’s building. Each player can protect his building by blocking balls thrown by other players. Players are not allowed to throw a ball from outside their home area, but they may leave the home area to fetch the balls that have been thrown. But be careful, because this leaves your home unprotected! The person with the tallest building after three minutes is the winner.