Yeah I thought Enders Game was the best book ever when I read it in like 4th or 5th grade. I read through the whole series of books over the next few years and enjoyed them at the time. I went back to read Enders Game as an adult and realized I just really enjoyed the wish fulfillment in reading about a bullied kid smashing the bullies face in then running shit. You’re right, it’s a pretty basic book and I have no idea why any adult would hold it or Card up as anything but basic. The only good thing I have to say about it as an adult is that it helped ignite my love of science fiction.