Contraversial novel written by Koushun Takami. Also serialized as a manga and produced into a feature-length film.
Premise: A random class of 9th graders are sent a island, issued weapons, and forced to kill each other until one student remains, as part of an authoritarian governent program to deal with reckless youth.
Watch/Read Battle Royale.
Leave it to the Japanese to produce a masterpiece.