The Realm of the Elderlings

The Realm of the Elderlings is a 19-book series with 19 primary works first released in 1985 with contributions by Robin Hobb, Paolo Bacigalupi, Aliette de Bodard, Trudi Canavan, Orson Scott Card, Kate Elliott, N.K. Jemisin, Mary Robinette Kowal, Ursula K. Le Guin, Juliet Marillier, George R.R. Martin, Michael Moorcock, Melanie Rawn, Patrick Rothfuss, Brandon Sanderson, Carrie Vaughn, and Tad Williams.