Three play modes: Play against friends, random players that you are matched with, or the game's AI. Two games in one: You can either settle lands in the classic board game or duel for dominance in the two-player card game, Catan - The Duel, which is based on the classic card game Rivals for Catan. Construct roads and cities, trade the island's resources strategically, beat your fellow settlers in duels, and win. Land on the island of Catan and compete with your fellow settlers for land and resources.
Same games, different name: If you're already familiar with the Catan universe, then you'll get quickly up to speed in Catan Universe.
The game is free to start, but if you want the entire basic game and expansion pack extras, you'll need to purchase them in the app. Catan Universe for iPhone is an updated, modernized version of Catan Classic, combining elements from the Settlers of Catan board game with the card game Rivals for Catan.