CATAN
Which parts are needed to play Cities & Knights with 5 or 6 players?
Replies are few or split, so this is the best-supported reading rather than a settled ruling.
- rainbowrose · Community · 2022-03-07
You need four components: the base Catan game, the Catan 5-6 Player Extension, Cities & Knights, and the Cities & Knights 5-6 Player Extension.