Since you mention after 2010 this probably isn't the movie - still you may find this interesting. There's a famous movie called
Battle Royale and a less famous follow up Battle Royale II (2003). It's about some future where a class is captured and everyone is let loose on an island where only 1 survivor is allowed.
http://www.imdb.com/title/tt0266308/ from 2000
Story seems familiar? Yup. I never got the rage about
Hunger Games since I've kinda seen "the original"
.
Battle Royale is a super movie .. action filled, funny, self ironic, etc. Word is that Quentin Tarantione just LOVES this movie and that and other Japanese movies were major inspirations for the
Kill Bill series. One of the girls - Chiaki Kuriyama - was in both Battle Royale and Kill Bill. You know that girl from Kill Bill as
Gogo Yubari, O-Ren's bodyguard.