I really, really enjoyed reading this book and finished in just over a day. It's lots and lots of fun.
However, it shouldn't be mistaken for anything more than that.
The idea behind it is novel and you can imagine the author must have had a great time writing it. When you strip it all down though, it is basically just a rather simplistic adventure story dressed up in really cool clothing. The writing is competent, but unremarkable; the characters are likeable, but have little depth; the plot is fast and exciting, but totally linear and throws up few surprises or twists.
It's the perfect book to read when you feel like spacing out a bit or being taken for a geekily-indulgent 80's space ride, but it's not quite the masterpiece it's being touted as.
Still though, highly recommended reading for anyone with any interest in old arcades, modern online games and, of course, the 80's.