Yeah I have to agree that Enders Game definitely ranks WAY up there as one of the best books I've ever read. While the sequels, Speaker for the Dead, Xenocide and Children of the Mind were great as well, they never quite recaptured the feel of the original. Now in recent years, Card has picked this story back up, starting with Enders Shadow, which I thought was a really excellent revisiting of the original Ender story, from the POV of the character Bean. I enjoyed the whole series that continued on from this one, Shadow of the Hegemon, Shadow Puppets, Shadow of the Giant. I've even brainstormed a really cool way to introduce Bean into the world of Children of the Mind. ^_^ Another very good series by Card is the Alvin Maker series, consisting of Seventh Son, Red Prophet, Prentice Alvin, Journeyman Alvin, Heartfire, and Crystal City(may have left one out there but I was like 10 when he first started writing these lol).
Daybringer Palanthor Frosthammer of E'ci <Triality>