Here is solid, useful content regarding The Citadel of Chaos PDF. This includes a book summary, tips for finding legitimate copies, and a note on the game’s mechanics. What is The Citadel of Chaos ? The Citadel of Chaos is the second book in the legendary Fighting Fantasy gamebook series, written by Steve Jackson (UK, not the US GURPS creator) and illustrated by Russ Nicholson. Originally published in 1983, it is a single-player adventure where you, the reader, control the fate of the hero.