I enjoyed this read with the only failings I could see was by the lack of funds for this book. There is not enough game and console images and what is there is in black and white with what looks like a cheap print of each image.
There is also the the odd misprint of sections where it did repeat its self.
It can feel like your more reading a manuel than a book with its appears but as I said, I think this was with lack of funds and not of love for the sega story its self.
I believe there is a new edition in the works with a revision, more images and in colour so I would wait for this edition.
A good read anyway, If your a console loverof the 90's, you will enjoy reading about Sega's history.