Quest", and those books received worse distribution than the 1918 'flu vaccine.
The higher a book gets in the charts, the more chance it will get noticed by new readers. Books either get into a positive feedback loop where they climb up and up, or they bob briefly and then sink again. So my appeal today is that if you're in the US and you've been thinking of buying a Fabled Lands book, this is the time when it would do the most good.
I'm assuming that, having taken a look, a new reader would want the series to continue. A lot of people do say that, and believe me it warms the cockles of my and Jamie's hearts to hear it, but it could be that I just don't get to hear from the ones who hate the whole idea and are glad the series ended halfway through. I can see why FL may not appeal to some gamebook fans. Instead of a single quest, issued to you at the start as though you'd just tossed your hat onto a stand outside M's office, in Fabled Lands you are a completely free agent and you have to define your own objectives. That's how I like to roleplay. I hate hate hate when the "Games Master" (or umpire, as I prefer to say) tries to steamroller us with a predesignated plotline. So FL really just reflects that style of play. But if you prefer a dictatorship, as some gamers do, then you may find yourself wandering aimlessly hoping that somebody will tell you what to do - or at least give you your motivation.
Given all that, it does make me wonder why FL was reasonably successful in Britain (one of the least free of all Western democracies) but struggled to find readers in the USA. Maybe the new wave of interest will pick up and we can turn that around. If you're in the US, you can find the books right here.