Wow. That is what I call brilliant. Writing ? Perfect. Psychology and character development ? Amazing. And the rest, the action, the story, all that is mastered. 
 Ender's Game is one of these books that mesmerized me. I simply could not put it down. I loved the themes of war and strategy and manipulation, with all the underlying questions. It's a book that makes you think. And the ending... (view spoiler)[OMFG I did NOT see that coming !!!!!! (hide spoiler)] 
 Not sure I'll read the rest of the series, as it stands alone quite well on its own... yet I'm curious as to wwhat's next, so maybe.