Battle Royale

Hi you guys! Are you Hunger Games lovers? Ever heard of Battle Royale? Battle Royale is a novel published in 1999 by Koushun Takami in Japanese. It has also been made in to a movie, and a manga series. The summary of the story is about a group of students from a school named Shiroiwa Junior High School (Shiroiwa an imaginary Japenese town in the Kagawa Prefecture) on a "study trip" lured on to a bus that is later intoxicated by dangerous gasses. They later woke up in Okishima Island school located on the isolated and evacuated island of Okishima southwest of Shodoshima (also in the Kagawa Prefecture). They learn about a military research project called the "Program". It was made to terrorize the people in order to prevent any uprisings. Apparently they've been doing this since the year 1947, and has 42 High School juniors isolated on an island on a fight to death. The last student alive wins. They wear metal collars around their necks which tracks their movement, and contains listening and tracking devices. If any students tries to escape the Program or goes to a forbidden area, a bomb inside the collar will discharge ultimately killing the wearer. If no one dies within 24 hours, all the collars will be discharged killing all the students.
Well here's Battle Royale, I've never read it myself and actually a friend of mine has told me that Battle Royale is much more violent than the Hunger Games. For those of you who've read Battle Royale, please leave a comment about it.