Incredibly similar to the Japenese film Battle Royale, and reminiscent of Stephen King's book The Long Walk.

All of them are situated in dystopian futures where a group of minors are pretty much sentenced to death, a death which will be broadcast to the world as 'entertainment', and used a means to relay a warning that the government are more powerful than the citizens and can do as they please.

In The Hunger Games' case, the future America (now called Panem) is made up of 12 Districts, each District serving a purpose, whether mining, fishing, farming, etc. The produce from every District is used mostly to benefit the affluent citizens living within the Capitol, leaving the District natives suffering with poverty and starvation.
Every year the Government living in the Capitol hosts The Hunger Games, where a boy and a girl (aged 12 - 18) from each of the 12 Districts is selected at random to enter a televised event where all 24 'tributes' will have to kill or be killed in an arena containing various weapons and utilities.
The last remaining survivor will return to their District a hero with a new life of fame and fortune and the Governments reward of one years supply of food for their District.

A book for both young adults and adults. Enjoy...