I missed the first ten minutes, but watched the rest. It was decent - a 7/10 movie - glad I watched it.
The ending was weird. So Kawada says to the guy and girl who he was with all the way through that he just used them to survive, and they were gullable, there was no Keiko etc, and you hear two gun shots. Kawada is announced the winner. Then all three of them appear at the school, and kill the teacher dude. Then the teacher dude gets up, speaks on the phone, eats a biscuit and dies again. The three get off the Island, where Kawada mentions Keiko again, and dies.
Whatsupwiddat?
Decent film though.