I've seen the Battle Royale movie. Yes, tama nga si conan_barbero. Mukhang dun nga nakuha ni Suzanne Collins yung idea/inspiration for writing Hunger Games. Kung napanood nyo yung Death Note movie (real actors) sya yung lead actor sa Battle Royale.
You better watch it and see kung paano napaganda ni Collins yung concept. Hindi ko pa rin nababasa yung Mockingjay. Pinapa-excite ko pa sarili ko for the ending hahahha!