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Sid Meier's Civilization: Beyond Earth - Rising Tide is the first expansion to Sid Meier's Civilization: Beyond Earth.
The expansion overhauls many parts of the game, as well as introduces new playable sponsors.
This expansion features four new playable sponsors. These new sponsors were 'late' to the seeding process, and offer a different perspective to the existing sponsors. The factions are the middle-eastern faction called Al Falah, German INTEGR, North Sea Alliance, and Korean Chungsu.
In changes similar to those introduced by Sid Meier's Alien Crossfire to Sid Meier's Alpha Centauri, Rising Tide allows players to build and defend cities built on Ocean tiles. New naval units also complement this expansion to gameplay.
The diplomacy system goes through a major overhaul, to make the system match the unit nature of sponsors, rather than treat them as civilizations you, as a player, know about.
The Affinity system is expanded so that players can "mix" two affinities to create a hybrid of the two, allowing access to new units, and giving players greater freedom while playing.