As a huge fan of Ready Player One, I didn't feel that there was enough character growth for any of the main characters. The plot took literally half the book o set up, and then was rushed in a series of moments to tie it all together. Ending was interesting to go in a new direction, but according to the writer his next book would be a prequel focused on Halliday and Ogden Marrow, which I feel we have enough info on between the two books.