Battle Royale is nothing like Lord of the Flies...totally different back story and point to the story I think. Hunger Games and Battle Royale are both pretty much about a futuristic world where kids kill each other for tv glory. I read the book some years ago but have boycotted the film since release
in lord of the flies, there's a plane crash, and somehow or another, all the adults die but all the children live (distractingly unrealistic scenario btw) and the children walk out of the plane wreckage to find themselves on an uninhabited island, and they end up killing each other because "human nature" makes random people "become evil without the rules and regulations of society", the book is basically a social comentary on describing "the evilness of human nature"
in battle royale, the kids are mysteriously knocked unconscious and wake up in a different location, and the "social commentary" is altered (and i personally say removed) because when the kids are given weapons, they are actually
instructed to kill each other, the kids having access to guns might have resulted in them killing each other even if they had not been instructed to do so, but without the kids actually being
instructed to kill each other, then it's just a rip-off of lord of the flies
the hunger games, on the other hand, has a completely different social commentary, and is also a classic example of "epic world-building" which the other 2 are not, the other 2 don't really have world building at all, in both battle royale and lord of the flies, we are seeing people walking around in a world that could very well be the same world that the readers live in,
however, in the hunger games, there is an spectacularly done level of "epic world-building", the world of the hunger games is "post-apocalyptic-dystopian-distant-future" and the entire country of "Panem" is completely obsessed with the annual event of "the hunger games" done as a social commentary of the way Americans obsess over the annual Superbowl or the way Europeans obsess over Soccer's annual World Cup, the games themselves are a parody of "reality TV" where the tributes being forced to kill each other, while the citizens of "the capitol" watch gleefully, is a social commentary of human cruelness, elitism and bigotry, where, in the real world, straight people can watch gays being victimized, and white people can watch black people being victimized, and it's okay, or even entertaining, because the victim "isn't one of us" and therefore, de-humanized, a black person gets murdered it's on the local news for one day, and the police make no attempt to arrest anyone, but a white person gets murdered it's on CNN for a week and the police actually convict someone of murder, the same thing is going on in the universe of Panem, the citizens of "the capitol" see the residents of the "12 districts" as "sub-human" and the people of "the districts" are killed for the amusement of the people of "the capitol", this elitist apathy for the value of human life is social commentary of something that occurs in the real world of The United States of America, the whites don't care if the blacks get murdered, the straights don't care if the gays get murdered, the born in america people don't care if the illegal immagrants get murdered, etc etc etc, and the hunger games does social commentary on this