Hellbook presents anecdotes from the players themselves alongside unreleased live and backstage images, some available for the first time. With artwork designed by illustrators and designers like Frederick Moulaert and Marcos Moura, the project - referred to as the 'Helloween Bible' - was initiated by Carlos Vincente Leon and David L�pez G�mez from Spain as a book by fans for fans.

Bassist Markus Grosskopf says: "For us, this book is highly emotional and evokes a thousand memories. Good moments as well as not so good ones are captured here. Thirty years of Helloween on almost 500 pages and no end in sight."