Mayfair Games Catan 5th Edition with 5-6 Player Extension – SportsnToys
Amazon.com: CATAN Board Game 5-6 Player EXTENSION - Expand Your CATAN Game for More Players, Strategy Game for Kids and Adults, Ages 10+, 3-6 Players, 60-90 Minute Playtime, Made by CATAN Studio : Toys & Games
CATAN Seafarers 5/6 Player Extension
Catan Extension - Wyrmwood
Catan Extension: 5-6 Player - Cities & Knights [Expansion]