[4] Three novels for the series included Shards of the Oracle, Reign of the Soul Eater and Quest of the Earthen.

Eleven-year-old Hunter Steel searches for the legendary inner world by following instructions in his grandfather's journal.

A spider startles Hunter, who falls into a hole to the center of the Earth and into the subterranean world of Arachna.

There, he discovers a small group of elite warriors struggling to survive and to save Arachna from the attack of Invectids, a race of insectoids.

The Spirit Oracle Key passes its power onto Hunter and Shadow, giving them new armor and weapons as well as new abilities.

Currently, the locations of the four Oracle Keys are known in the English version: The animated series debuted on March 25, 2006 on Teletoon in Canada.

[5] On May 31, 2006, the Spider Riders manga premiered at TV Tokyo's ani.tv website, illustrated by Junji Ohno of Studio 23.

Hunter wears the manacle when it flies to his hand and falls into Inner World through a gap between web strings.

Inside the Inner World, Hunter discovers Shadow after peeking at the bathing Corona and after trying to rescue a cart of caged humans.

In the Boy's Fang manga version, certain scenes are re-edited; for example, Corona is now naked instead of in underwear when Hunter first met her in chapter 1, an illustration is added at the beginning of each chapter, and Sparkling Sparkle segments have been removed.

Tribal Nova produced a tie-in online game based on the show, available on the official site.