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On top of these differences several wonders and buildings are exclusive to either land or aquatic cities. However, they are much harder to defend, and are less efficient at producing land and air units as land based cities would.
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Aquatic cities produce less unhealth, produce more energy and culture, and can create naval units much faster than land based cities. Movement, rather than culture, is the way aquatic cities expand their borders. Unlike land based cities, or even ocean cities in previous iterations of the game, aquatic based cities can move.
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The expansion adds several new dimensions to aquatic gameplay. Rising Tide brings new features including expanded water gameplay (which includes floating cities), hybrid affinities, a completely revamped diplomacy system, and an expanded exploration system. New factions have arisen and have launched a new wave of colonies off planet. In the aftermath of the first wave of colonies, the people of Earth continue to struggle for existence. Sid Meier's Civilization: Beyond Earth – Rising Tide, is an official expansion pack for the turn-based strategy video game Civilization: Beyond Earth.
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