Ender's Game was not as good as I expected, and I expected a lot, since it was such a critically acclaimed book. Writing a review for it is pretty hard because it was quite bad, but I surprisingly enjoyed it, so... 
 I had to big problems with the book: 
 1. Orson Scott Card's writing: often tedious. Too often tedious. That made the book kind of put-down-able for me. It took me an awful lot of time to read it because no matter how hard I tried to get into the story, I couldn't. The plot was not that bad, though. 
 2.Ender. Yes, Ender was the biggest disappointment of the novel. He was the "Mr. Perfect" that I usually hate. I understand, he was good at fighting and all, but I sometimes wanted to punch him. 
 There were other characters that kept me going, like Mazer, Peter (oh yeah, Peter was great), and maybe Bean. 
 I gave Ender's Game 2 stars, but I expect an improvement from Speaker for the Dead