LOS ANGELES, Oct. 10 (UPI) -- Battle Royale , returning to theaters Sunday for its 25th anniversary, is as vicious a satire as it was upon its release. The film in fact may be even more relevant now, as the social issues it predicted have gotten worse. Based on the 1999 Koushun Takami novel, Battle Royale depicts a society ravaged by violent youth. In this world, the government passes a law authorizing a "game" that pits 42 high school students against each other in a deathmatch. The outrageous