"Not for those with a weak stomach!"
Battle Royale is terrifying. Absolutely terrifying. It's actually given me nightmares. It's also one of my absolute favorite books ever.
I read the print version of the book several times before getting it in audio format, and I think that that made listening to it much easier than if I had listened to it without reading it. The book was translated from Japanese, and the translation's not perfect, so that takes some getting used to, as does the fact that there are 42 children all with very similar Japanese names. It takes a little more concentration to follow Battle Royale than it probably takes for most other books.
If you can get over those few problems, though, and explicit violence doesn't make you cringe, you'll realize that this story is wonderfully terrifying.
Forty-two 15-year-old classmates are thrown onto an island and told to fight until only of of them survives. (Think The Hunger Games, but for grown ups). And heed this warning very seriously - the violence in this book gets *very* graphic. If you're someone for whom that might be a problem, don't buy it. Try the print version instead.