Prerequisite: Priority: The Citadel II (Mass Effect 3)
- Main article: Hali
Carcosa is the first planet orbiting the star Agaiou.
- Main article: Carcosa
- Mission: Nimbus Cluster: Library of Asha
Neargas is the second planet in the Agaiou system, but no longer orbits the star.
- Main article: Neargas
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