What can one say about Dragon Quest? All I can say is it's easy to see how it's such a top seller amongst the serious gamers in Japan. To my knowledge, only Journey of the Cursed King is available in the UK, but I believe there are at least 8 other DQ incarnations. This series and Final Fantasy are the top RPGs in the Far East.
I loved playing DQ. My saved game ran to almost 100 hours. I bought the book just after buying the game, so working through that really enhanced what I got out of it, I think.
Great game, great humour in it too. Some of the characters lines had me laughing out loud often. I was also surprised that I happen to know the person who is Yangus' voice!!! How weird!
Anyway, do go out & try this game. The experience will definitely bring you pleasure :D