All things considered, this is actually quite well done. The voice acting is superb considering your likely resources. The sound effects used are also nice. The art, though hardly original, is also thrown together pretty well. My only complaint is that we weren't given much premise and right now, we have no reason to care about the characters. We have no background into their character, and thus, they're just blank faces. The thing that truly made Battle Royale brilliant was the characterization... particularly in the novel, though this was also present, to a lesser degree, in the film.
also, the end of this is incredibly abrupt. credits, or at least a screen stating the end of the film should be added. Also, it's fairly long, so a pause button, and perhaps a scene back/scene forward button would improve this a fair bit.