Rifts World Books is a 18-book series with 18 released primary works first released in 1991 with contributions by Kevin Siembieda, Alex Marciniszyn, Steven Sheiring, C.J. Carella, Pat Nowak, Carlos J. Martijena-Carella, Wayne Breaux Jr., Ramón Pérez, Scott Johnson, Ben Lucas, Mark Sumimoto, and François DesRochers.