The Pact Worlds are the beating heart of the Starfinder campaign setting, a solar system full of citizens both familiar and bizarre. From the cosmopolitan corridors of Absalom Station to the carnivorous jungles of Castrovel or the floating cloud-cities of the gas giant Bretheda, this hardcover rulebook is your guide to Starfinder's core worlds and civilizations, and the perfect place to launch any adventure.

Inside, you'll find:

In-depth gazetteers of the system's 14 major worlds, from high-tech Verces and the draconic empires of Triaxus to the necromantic wastleands of Eox or magical bubble cities floating on the surface of the sun. Each gazetteer features a detailed world map, residents and cultures, settlements and adventure locations, a unique theme to customize characters from that world, and more.

New playable alien races, from undead Eoxians to Castrovellian plant-people.

New starships, from the living vessels of the Xenowardens to sinister Hellkni

• Roleplaying game supplement delving into the Pact Worlds setting.
• Learn about the diverse planets and societies in the Starfinder universe.
• An expansive resource for world-building and storytelling.