The Foreworld Saga

The Foreworld Saga is a 21-book series with 22 primary works first released in 2001 with contributions by Neal Stephenson, Greg Bear, Mark Teppo, E.D. deBirmingham, Erik Bear, Joseph Brassey, Cooper Moo, Nicole Galland, Angus Trim, Michael Tinker Pearce, Linda S. Pearce, Linda Pearce, M. Harold Page, Scott James Magner, Barth Anderson, Charles C. Mann, and Ellis Amdur.