Legends of Skyfall

The Legends of Skyfall was a series of four adventure gamebooks written by David Tant and published by Armada in 1985.

The books allow the reader to become a lone adventurer on a planet called Skyfall which was colonized by humans who were fugitives from a dying planet. Although the population of humans on the planet has grown over an undisclosed period of time (hinted at being a few hundred years) to the point where they now outnumber indigenous races, the planet remains largely untamed. The humans themselves are largely hemmed in to a small Kingdom known as Delta.

The series' major deviation from others of the genre was a unique system for organizing combat. Whereas most gamebooks and Role-Playing Games involve the use of dice to create randomness, the Skyfall series adopted a system of coin tosses.