Zork books

The Zork books were a series of four books, written by S. Eric Meretzky, which took place in the fictional universe of Zork. The books were published by Tor Books. Like the Zork video games, the books were a form of interactive fiction which offered the reader a choice of actions symbolized by pages to turn to, as in the contemporary book series Choose Your Own Adventure, or the later Give Yourself Goosebumps series. The protagonists of each book were a boy and girl, called Bill and June on Earth, and re-dubbed Bivotar and Juranda in Zork. The settings and plots were reminiscent of locations and events from the Zork universe.

At each ending the player received a score from zero to ten based on how far they had made it through the book and if the ending was a failure, a chance to try again at the choice where they decided incorrectly. The books also usually contained a "cheater trap", reached by opting to use an item which does not exist (at least not in the current book). The story abruptly ends; the reader is chastised and not given a chance to try again in the endings resulting from these.