Déjà vu: When a book you're reading is a book you've read before

A lot of people are excited for the Hunger Games movie to come out. I confess, I do have an interest; I think they picked a good Katniss, and I think that the action and story flow will translate well to the screen.

However.

A few years back, 1999, a book came out in Japan and was subsequently translated to English. It was called Battle Royale, and was written by Koushun Takami. Battle Royale takes place in a fictional totalitarian state. Every year, a class of high school students is chosen to be taken to a location for "The Program", given weapons, and kill each other. There is one winner. If the students decline to kill one another, there is a time limit for nobody dying, and then they're all killed remotely and there is no winner. Pretty similar, n'est-ce pas?