I remember owning this book in the '90s. I lived in Michigan at the time. The main thing I do recall is that you would turn to different pages to make a choice, and you could collect items along the way. For instance, when fighting the dragon you could perform an action or use your rope to perform a different action... if you had acquired the rope earlier. I think the book itself was green and possibly had a dragon on the cover. It may have had a man in a suit of armor too, but I really do not remember. Anyone recall this book, or anything about it?
Sorry, I wish I could be more specific. I was like 8 at the time, and I just don't have that good of a memory.