I
Ian Livingstone
The Warlock of Firetop Mountain
A single-player adventure gamebook in which the reader's choices determine whether they survive a perilous journey into Firetop Mountain. Guided by an old wizard's cryptic counsel, you must navigate traps, monsters, and magic to reach the lair of Zagor, the warlock who guards a hoard of untold treasure.
This is the first title in the Fighting Fantasy gamebook series, and while it functions as a standalone adventure, it established the core mechanics and system used throughout the rest of the series.
The book has been adapted into several formats, including a video game, an audio drama, and a board game.