This was interesting.
I'm not keen on arcade games and much of the 80s' obsession with them has passed me by. But, ... I do appreciate that Ernest Cline used them as a means to turn a nostalgic reference to them into a sci-fi story with a few good points about the possibilities and dangers of a society almost totally locked into a virtual reality.
There were parts of the book when I felt Cline was just listing references to games and music with little purpose to develop the plot. This did change at the end of the book, which I enjoyed immensely, but wasn't enough to make me love the book outright.
This was a fun read, but I'd prefer a re-visit of the film War Games the next time I'm in the mood for an 80s-themed geek-fest.