All of the official expansions are provided by Catan.com and are officially sanctioned by Catan LLC. The fan expansions were created or translated by users at BoardGameGeek. The individual expansions are listed here for public use. All rights reserved to authors.
Official Catan Histories Expansions
Official Other Catan Game Expansions
Starship Catan - 1. Mission: The Space Amoeba (ZIP / PDF)
Starship Catan - 2. Mission: The Asteroid (ZIP / PDF)
Starship Catan - 3. Mission: The Diplomatic Station (ZIP / PDF)
Large Fan Expansions for Settlers and Seafarers
Apocalypse Catan by Moo Noir (ZIP) - Play Settlers in a disaster scenario with new resources and terrain
Puerto Catan by Chris Hawks (PDF ) - Play Settlers using the mechanics from the game Puerto Rico
Settlers of Riskopoly by Matt Sklar (DOC) - New rules for Settlers integrating aspects of Risk and Monopoly
Titans of Catan by Steve Evans (XLS) - Take a Catan board, toss in Titan units, wage war like Axis & Allies
Small Fan Expansions for the Settlers and Seafarers
Complete Unofficial Catan (Pieces / Rules) by Andrew "Meepleeater" (PDF/ZIP) - Play Settlers and Seafarers with new tiles, new resources, and new mechanics
Cutters of Catan by George van Voorn (PDF) - Reform the land before obtaining resources
Laborers of Catan by Buzz Killington (PDF) - Laborers travel far and wide to earn a living
Tragedy of the Commons by Richard Cox (DOC) - Resources are becoming scarce and only return slowly
