You can say that Battle Royale is similar to the recent megahit Hunger Games (also adapted from a book of the same name). Set in the near future where society is on the verge of collapse, the Japanese government takes drastic action against the problem of rebellious teenagers by forcing them to compete in a deadly game in an island, where the students must kill each other using weapons until one remains. Sound familiar?
The film was a mainstream domestic blockbuster, becoming one of the ten highest grossing films in Japan, and was released in 22 countries worldwide. There is probably renewed interest recently in this film due to Hunger Games.