King of the hill (also known as king of the mountain or king of the castle) is a children's game, the object of which is for a single player to remain on top of a large hill or similar feature as its "king". Rivals attempt to remove the player and take their place, thus becoming the new king of the hill. The way the king can be removed from the hill depends largely on the rules determined by the players before the game starts. Ordinarily, pushing is the most common way of removing the king from the hill, and punching and kicking are not allowed. The potential for rougher versions of the game have led to it often being banned from schools. "King of the kill" is a method of play in airsoft and the woodsball variant of paintball, as well as in various first-person shooter videogames. Rules There are many versions of the game. These include: Classic version The first to get on the hill at the start becomes the king. To become a king, you need to go up the hill and push the king off. At the end, the king wins. Team version In this version, there are two or more opponent teams The king is the leader of the first team to get up the hill at the start. To become the new king, the leader of an opposing team must get on the hill and push the king off. Allies of the king can push opponents and enemies off, and non-lead opponents can push off allies but not the king. At the end, the king and his allies win. "Royal family" version In this version, there is not just the king but also his family, making up teams of four. The king, queen, prince, and princess are the members of the team that get on the hill first. The other team's players can push off their respective counterpart on the hill and assume the royal role. The king or queen has the ability to "kick" an opposing team's player from the hill and send them back to their own team in exchange for the person with the same role from the king's or queen's team. Use as a metaphor The name of the game has become a common metaphor for any sort of competitive zero-sum game or social activity in which a single winner is