Planetary Structs are permanent installations, like Extractors and Refineries, that make up your Alpha Base on a given planet.

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Planetary Structs have various roles, such as acquiring resources, bolstering defenses, or generating Energy.

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Planetary Structs can only be deployed on tiles with Planetary Beacons.

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When your CMD Ship departs to establish a new Alpha Base, your Planetary Structs remain behind.