I have recently run ‘The Warlock of Firetop Mountain’ as an AGE conversion.

The key method of success in converting a solo choose your own adventure book into a group type RPG is twofold:
First, I was lucky enough to find a map containing the dungeon along with its page numbers in place. This meant that I could make the book more malleable than it would normally be, backtracking and such. I always know how to move the players on if it comes to it.
The next thing I needed to do was find a list online, where all the creature encounters of the mountain are revealed. I simply had to go through that list and make some quick notes on how I would convert them if they were to happen. Most were simple references to GM books and other AGE files, but a couple did need whole new stat sheets made up – namely the vampire and Zagor himself.

These are simply my notes for my use. You may not agree with some of my decisions on conversion type, and by all means you should change it where you see fit. I just like the idea of sharing in case it helps.

Here’s the links you should need.

Map https://drive.google.com/file/d/0B_2t6Ou1K-48a0FkazVGZnFlWDA/view?usp=sharing
Map 2 https://drive.google.com/file/d/0B_2t6Ou1K-48LTVlaTFicVJLbWc/view?usp=sharing
FILE https://docs.google.com/document/d/1TCDceSG9hbesG4o6rqzxRrVB9une9Qm6VlyJ6BIs5Nc/edit?usp=sharing

See you at the table!