King of the Hill (book series)

King of the Hill is a British post-apocalyptic series of novels published by Penguin. The series is inspired by the novel Lord of the Flies, featuring many similar elements. The series' overall theme is of very immature children having to fill the roles of adults.

Synopsis
After the Final War that ended the world, what's left of humanity began building underground city-like bases to avoid the troubles on the surface, which has reverted to a primordial jungle full of odd looking creatures. Most of the series takes place in one particular underground base named Asgard, which is mostly populated by very young people who have developed their own form of society which is very similar to a game of king of the hill.

Main

 * Tobias Larsen - the main character of the series who is a sixteen-year-old boy that doesn't plan on participating in the game and believes that Asgard is a terrible place to live. Due to this, he is looked down on by the others in the base.
 * Joalynn Summers - a girl who is a "digger", meaning she enjoys drilling through the ground. On her adventures, she comes across Asgard and reveals she has heard of a utopian society somewhere underground.