29 books
Starfinder Adventure Path: The Chimera Mystery (The Threefold Conspiracy 1 of 6)
Starfinder RPG: Character Operations Manual
Pathfinder Adventure Path: Eulogy for Roslar’s Coffer (Tyrant’s Grasp 2 of 6)
Starfinder Adventure Path: The Ruined Clouds (Dead Suns 4 of 6)
Starfinder Roleplaying Game: Starfinder Core Rulebook