It just arrived today (I bought from UKs book depository site) so haven't had a really good read so shouldn't get too carried away until I read it properly! I just found the concept quite intriguing. But for a graphic novel that comes in at just under a couple of hundred pages it does seem to try to cover as much as it can and does an admirable job of it. As you would expect it does go heavily for the US-centric story with the NES salvation after the crash type thing. From what I can tell there isn't a lot on the UK scene, if any...though I did note a little spectrum in a graphic panel with a group of other eight bit computers and wee ZZap 64 cover in another panel!
It is a really interesting spin for a book on gaming history though, which is why I bought it, it was something a bit different.
The best summation I think at this stage before reading it, is it covers the timeline history along the same kind of line as the Tony Hawk narrated Video game invasion DVD