In the book, Katniss let’s her sister go into the games, who is 12 years old, in the hunger games because Prim is very weak and fragile. The hunger games are a competition of the nation of Panem (the present day United States), which is divided in 12 Districts. In these games 12 boys and 12 girls between 12 and 18 years old learn the rules of survival and fight one another to the death until only one survives. The boys and girls are named tributes and represent their Districts. A menace of the games are the Muts. The Muts are mutant wolves. The origin of the competition was the Nuclear War of the Dark Years, when the districts rebelled against the Capitol. The Districts lost the war and the Capitol won. The champion of the games lives in a special village in their districts and they are given money and jewellery and their family will not be elected for the games again.