Fangs of Fury (Fighting Fantasy #39)

The fire of the Sentinels must be rekindled!

Six massive stone dragons guard the tiny kingdom of Zamarra. But the fire they breathe has been extinguished. And now Zamarra is under siege by Ostragoth the Grim and his swarming hordes. His aim is to destroy the twelve wizards of the Mage-Order and spread the evil of the enchanter Jaxartes throughout Khul! The Sentinels' fire must be restored to its former power – and YOU have volunteered for the task! Your terrifying mission will take you to the white-hot core of the volcano known as the FANGS OF FURY and there is no time to lose!

Part story, part game, this is a book in which YOU become the hero! YOU decide which routes to take, which dangers to risk and which foes to fight.