Below the Root is an adventure game released in 1984 by Windham Classics, a division of Spinnaker Software. It is titled after Below the Root, the first of the Green Sky Trilogy of novels, written by Zilpha Keatley Snyder and published between 1975 and 1977. The player can assume the role of one of five characters with different abilities, a member of one of two races — the Kindar or the Erdling — and attempt to settle the existing differences between the two groups. The game was based on a series of books by Zilpha Keatley Snyder. Explaining how the game came about, she wrote: The original world of Green-sky first appeared in Snyder's novel The Changeling, where it was a fantasy world conceived by two schoolgirls. As such, it featured princes and princesses, wicked queens and familiar fairytale situations. However, many of the details appeared in the later novels. Green-sky as the girls imagined it is a low-gravity planet whose residents live in "softly rocking" houses built in th...