CATAN expansions

Seafarers vs Traders & Barbarians

Short answer: buy Seafarers first. Seafarers is the first CATAN expansion I'd buy. It adds islands and ships without making the game much heavier.

Pick Traders & Barbarians first instead if this sounds more like your table: Traders & Barbarians is a box of smaller variants, including 2-player rules. Get it after Seafarers and Cities & Knights.

QuestionSeafarersTraders & Barbarians
Our labelBuy this firstWorth it
Buy order#1 for CATAN#3 for CATAN
What it addsShips, a pirate, gold fields, new islands to settle and a campaign of nine map setups.A box of variants: 2-player rules, event cards instead of dice, fishermen, rivers, and a five-scenario campaign.
What it fixesLong-time players find the same board stale; adds sea exploration.Adds variety without a big rules jump, including gentle scenarios for newer players.
TypeExpansionExpansion
Players3–4 players2–4 players
Rules loadAbout the same rules loadAbout the same rules load
Best forBest for casual groupsBest for casual groups
You need firstJust the base gameJust the base game
Price guide$40–$60$60–$100
MoreSeafarers detailsTraders & Barbarians details

See the full CATAN buy order