Black Vein Prophecy is a single-player roleplaying gamebook written by Paul Mason and Steven Williams, illustrated by Terry Oakes and originally published in 1990 by Puffin Books. It forms part of Steve Jackson and Ian Livingstone's Fighting Fantasy series. It is the 42nd in the series in the original Puffin series (ISBN 0-14-034057-2). There are currently no announced plans to republish this book as part of the modern Wizard series.
In this book the player's scores are determined at the beginning of the adventure itself, rather than in the rules section. Also, the rules are printed at the back of the book.