Answer:
The last paragraph of chapter 8 of Ender's Game is important because it reveals the truth about the game that Ender has been playing. It reveals to the reader that the "game" was actually a real battle and that the people Ender thought he was competing against were actually his allies. This revelation serves to drive home the idea that war should be an exercise in which all sides ultimately work together to win and that just because someone may fight against another, they can still become allies. The last paragraph in chapter 8 brings this lesson to the forefront of the story and provides a powerful message for the reader to take away.