Ender's Game full trailer is here! The movie based on the book and turned into a movie writen and directed by Gavin Hood (X-Men Origins).
"Ender's Game (1985) is a science fiction novel by American author Orson Scott Card. Set in Earth's future, the novel presents an imperiled humankind who has barely survived two conflicts with the "Buggers", an insectoid alien species. In preparation for an anticipated third invasion, an international fleet maintains a school to find and train future fleet commanders".
Ender's Game stars Asa Butterfield, Harrison Ford, Nonso Anozie, Moises Arias, Ben Kingsley, Hailee Steinfeld, Abigail Breslin and Viola Davis, and will be released November 1st 2013