Competition is the name of the game in Ender’s Game. The International Fleet needs a bunch of people, but they only need one supreme commander. (And for entirely other reasons, they need that supreme commander to be a super genius who’s easy to fool.) In order to find out which of their super geniuses children is the super genius, the kids have to compete. And compete. And compete. Competition also comes up outside of Battle School. For instance, in Peter’s view of the world and, most notably, in Ender and Peter’s relationship.