7 books in series

Star Wars: The Roleplaying Game (D6)

Star Wars: The Roleplaying Game (D6) is a 7-book series with 7 released primary works first released in 1987 with contributions by Greg Costikyan, Curtis Smith, Bill Slavicsek, Douglas Kaufman, West End Games, Daniel Greenberg, Stewart Wieck, Mark Rein-Hagen, Simon Smith, Eric Trautmann, and Sterling Hershey.

Star Wars: The Roleplaying Game (D6) is a role-playing game written by Greg Costikyan and first released in 1987 by West End Games. In addition to the core rules, its major titles include several sourcebooks, multiple scenarios, a series of 'galaxy guides', and other supporting material.

The Roleplaying Game
Star Wars
Battle for the Golden Sun
Tatooine Manhunt
The Star Wars Sourcebook
Fragments From the Rim
Star Wars Galaxy Guide 6: Tramp Freighters