A Catan expansion adds new rules, boards or players to a base game you already own. Some add ships and islands, some add knights and city upgrades, and some only add the pieces needed for a larger table, so the first thing to check is which base edition each one supports.
The six expansions below are drawn from the Catan line on Amazon. Contents and player counts come from each product’s listing page. We have not played these ourselves. Descriptions of gameplay are the publisher’s own.
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What to Look For
| Feature | Why it matters |
|---|---|
| Base game needed | Every expansion here is an add-on, not a standalone game |
| Edition | Several listings name the 6th Edition specifically |
| Player count | Some expansions are for 3-4, others extend to 5-6 |
| Playtime | Listings range from 60-90 to 90 plus minutes |
Specs at a Glance
| Expansion | Players | Adds | Notes |
|---|---|---|---|
| Seafarers | 3-4 | Ships, islands, wonders | 5-6 play needs two further add-ons |
| Cities and Knights | 3-4 | Knights, city upgrades, invaders | 90 plus minutes |
| Traders and Barbarians | 3-4 | Small expansions and variants | Includes a two-player variant |
| Explorers and Pirates | 3-4 | Exploration, missions, pirates | Council of Catan rewards |
| 5-6 Player | 3-6 | Hexes, cards and wooden pieces | 28 terrain hexes; brown and green pieces |
| Seafarers 5-6 Player | 3-6 | Ships, settlements, cards | Turn-taking system for larger groups |
The 6 Best Catan Expansions
1. CATAN Seafarers Expansion
A 6th Edition expansion built around the Catanian archipelago: ships, new islands and wonders, with pirates, fog and gold on distant shores. It is listed for 3-4 players.
Suits: a sea-themed map. Strengths: ships that connect settlements. Weaknesses: 5-6 players need extra add-ons. Skip it if you own an earlier edition.
View CATAN Seafarers Board Game Expansion (6th Edition) on Amazon
2. CATAN Cities and Knights Expansion
A 6th Edition expansion that turns settlements into cities and adds knights to hold off invaders, with new resources and mechanics. The listing gives 3-4 players and a 90 minute playtime.
Suits: players who want more tactics. Strengths: a knight and city layer. Weaknesses: a longer game. Skip it if you want a light session.
View CATAN Cities and Knights Board Game Expansion (6th Edition) on Amazon
3. CATAN Traders and Barbarians Expansion
A compilation of small expansions and variants, including Event Cards, Harbormaster and Catan for Two. The listing says it can be played on its own or combined with other expansions.
Suits: a pick-and-mix of variants. Strengths: a two-player option. Weaknesses: the listing title does not name an edition. Skip it if you want one focused scenario.
View CATAN Traders and Barbarians Board Game Expansion on Amazon
4. CATAN Explorers and Pirates Expansion
A 6th Edition expansion with exploration, resource collection, pirate challenges and missions that earn rewards from the Council of Catan. It is listed for 3-4 players.
Suits: a mission-based game. Strengths: new scenarios. Weaknesses: 3-4 players only. Skip it if you play with larger groups.
View CATAN Explorers and Pirates Board Game Expansion (6th Edition) on Amazon
5. CATAN 5-6 Player Expansion
An add-on for the 6th Edition base game that brings the table to 3-6 players. The listing says it includes 28 terrain hexes, 25 resource cards, 9 development cards and two sets of wooden pieces in brown and green.
Suits: larger groups. Strengths: a clear contents list. Weaknesses: not a standalone game. Skip it if you play with four or fewer.
View CATAN 5-6 Player Board Game Expansion (6th Edition) on Amazon
6. CATAN Seafarers 5-6 Player Expansion
An extension for the Seafarers expansion with extra ships, settlements and resource cards, plus a turn-taking mechanism for larger groups. The listing says 3-6 players and 60-90 minutes.
Suits: a Seafarers group of five or six. Strengths: a system for keeping players engaged. Weaknesses: it needs Seafarers. Skip it if you do not own Seafarers.
View CATAN Seafarers 5-6 Player Board Game Expansion (6th Edition) on Amazon
Care and Setup
- Check the edition printed on your base game box before ordering.
- Read the rules insert that comes with the expansion.
- Keep pieces from each expansion in separate bags.
- Count the components after opening.
Mistakes to Avoid
- Buying an expansion for a different edition.
- Assuming a 5-6 player set works on its own.
- Mixing several expansions in a first game.
- Ignoring the listed player count.
Catan Expansion FAQ
Do I need the base game?
Yes. The listings describe each of these as an add-on.
Which one extends the table?
The 5-6 Player set does, and the Seafarers 5-6 Player set does the same for Seafarers.
The Short Version
For ships and islands, the Seafarers. For knights, the Cities and Knights. For variants, the Traders and Barbarians. For missions, the Explorers and Pirates. For a bigger table, the 5-6 Player. For a bigger Seafarers table, the Seafarers 5-6 Player.
