Battle Royale by Koushun Takami

In a dystopian future Japan, forty-two junior high school students are outfitted with weapons and bid to kill one another until there is only one left standing.

Koushun Takami's notorious high-octane thriller envisions a nightmare scenario: a class of junior high school students is taken to a deserted island where, as part of a ruthless authoritarian program, they are provided arms and forced to kill until only one survivor is left standing. Criticized as violent exploitation when first published in Japan—where it became a runaway best seller— Battle Royale  is a  Lord of the Flies  for the 21st century, a potent allegory of what it means to be young and (barely) alive in a dog-eat-dog world.