Instead of assembling the island of Catan, you simply extend the North Rhine-Westphalia game map. You need the cards and game pieces of the CATAN base game.
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Indiana & Ohio Edition
In order to settle the region of Indiana & Ohio, you need the game pieces and cards from the CATAN base game.
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Bavaria Edition
Instead of assembling the island of Catan, you simply extend the Bavaria game map. You need the cards and game pieces of the CATAN base game.
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Delmarva Edition
In order to settle the region of Delmarva, you need the game pieces and cards from the CATAN base game.