Bailey Cove Sci-Fi: Ender's Game

Aliens have attacked Earth twice and almost destroyed the human species. To make sure humans win the next encounter, the world government has taken to breeding military geniuses -- and then training them in the arts of war... The early training, not surprisingly, takes the form of 'games'... Ender Wiggin is a genius among geniuses; he wins all the games... He is smart enough to know that time is running out. But is he smart enough to save the planet?